As the aroma of sizzling ribeye fills the air, it’s hard not to feel the anticipation build. This Ultimate Ribeye Steak Sandwich with Chimichurri is more than just a meal; it’s a flavorful journey that transforms an ordinary day into something extraordinary. Picture perfectly grilled steak topped with zesty chimichurri, rich garlic butter, and subtly sweet caramelized onions, all nestled between crusty slices of cheesy sourdough. Not only does this recipe offer quick prep and maximum flavor, but it’s also a crowd-pleaser, perfect for everything from casual dinners to weekend barbecues. So, are you ready to elevate your sandwich game and surprise your taste buds with a unique twist on a classic favorite? Let’s dive in! Why is this steak sandwich unforgettable? Juicy Flavors: Each bite of this ribeye steak sandwich bursts with rich, savory flavors, thanks to the zesty chimichurri and creamy garlic butter. Gourmet Experience: Transform a simple sandwich into a gourmet delight with caramelized onions that add sweetness. Quick Prep: Despite its restaurant-quality taste, this recipe is quick to prepare, making it perfect for busy weeknights. Crowd-Pleaser: Impress your guests at gatherings or barbecues—everyone will be asking for seconds! Versatile Ingredients: Swap in your favorite cheese or add greens for a refreshing twist, just like in my Breakfast Sandwiches Discover blog. Steak Sandwich with Chimichurri Ingredients • Elevate your lunch with these tasty components! For the Garlic Butter Garlic Bulb – Provides rich flavor; substitute with garlic powder if necessary. Unsalted Butter – Creates the garlic butter; salted butter can be used instead. For the Sandwich Crusty Bread (Sourdough) – The base of the sandwich; any chewy bread can work. Ribeye Steaks – The star protein; bring them to room temperature for optimal grilling. Low-Moisture Mozzarella Cheese – Melts beautifully to create a creamy texture; Gruyère or provolone are good alternatives. Yellow Onion – Adds sweetness when caramelized; sweet onions are a great substitute. For the Chimichurri Parsley Leaves – Provide freshness; cilantro can be used for a different flavor. Oregano Leaves – Adds earthiness; dried oregano is acceptable but use less. Garlic Clove – Intensifies chimichurri flavor; you can use more if desired. Red Wine Vinegar – This gives the chimichurri tang; apple cider vinegar is a suitable substitute. Extra-Virgin Olive Oil – Binds the chimichurri together; any high-quality oil works well. Red Pepper Flakes – Adds heat; can be omitted or swapped for fresh chili if preferred. For Seasoning Kosher Salt – Enhances all flavors; sea salt can be used as a substitute. Black Pepper – For seasoning; freshly cracked is preferred. Step‑by‑Step Instructions for Ultimate Ribeye Steak Sandwich with Chimichurri Step 1: Make Garlic Butter Preheat your oven to 400°F (200°C). Wrap a whole garlic bulb in aluminum foil and roast it for 40-60 minutes until soft and caramelized. Once cooled, squeeze the garlic cloves into a bowl and mash them with 4 tablespoons of unsalted butter until well combined, creating a rich garlic butter that will enhance your steak sandwich. Step 2: Prepare the Bread While the garlic is roasting, take your crusty sourdough bread and slice it in half horizontally. To make it even better, scoop out a small portion from the top half to create a well for your ingredients. Next, generously spread the garlic butter inside both halves, readying the bread for a delicious flavor boost that pairs beautifully with the steak. Step 3: Caramelize Onions In a skillet over medium heat, add 2 tablespoons of olive oil along with thinly sliced yellow onions and a pinch of kosher salt. Sauté the onions for about 25 minutes, stirring occasionally, until they turn a deep golden brown and become richly caramelized. This step builds a sweet layer of flavor that complements the savory steak perfectly. Step 4: Make Chimichurri To whip up the zesty chimichurri, combine a handful of fresh parsley, 1 tablespoon of oregano leaves, 2 minced garlic cloves, 2 tablespoons of red wine vinegar, and a pinch of salt in a food processor. Blitz until combined, then slowly drizzle in ½ cup of extra-virgin olive oil while mixing, giving you a vibrant sauce that adds brightness to the steak sandwich. Step 5: Grill the Steaks Bring your ribeye steaks to room temperature for about 30 minutes before cooking. Season them generously with kosher salt and freshly cracked black pepper. Preheat your grill to high heat and cook the steaks for 3-4 minutes per side, until they reach medium-rare (about 130°F internal temperature). This grilling method ensures a juicy steak that will be the star of your sandwich. Step 6: Grill the Bread After the steaks are cooked and resting for about 5 minutes, heat a grill pan or your outdoor grill to medium-high. Place the prepared sourdough halves on the grill, buttered side down, and grill for about 2-3 minutes until golden brown. Flip the bread to add low-moisture mozzarella cheese on the bottom half, allowing it to melt perfectly. Step 7: Assemble the Sandwich With the chimichurri ready, spread a generous layer over the top half of your grilled sourdough. Place the grilled ribeye steaks on the bottom half, followed by the sweet caramelized onions. Carefully close the sandwich, and slice it in half for a delicious reveal of the layered ingredients, ready to elevate your lunch experience. Expert Tips for Steak Sandwich with Chimichurri Rest Your Steaks: Allow steaks to rest for 5-10 minutes after grilling to enhance juiciness; this prevents the juices from escaping when you slice. Prep Ahead: Make chimichurri, garlic butter, and caramelized onions in advance (3-5 days); this not only saves time but greatly enhances the flavors. Watch the Garlic: Ensure roasted garlic is soft but not burnt; burnt garlic can make your garlic butter bitter, affecting the overall taste of your steak sandwich with chimichurri. Perfect Cheese Melt: For best results, cover the grilled bread with cheese and close the grill lid to melt the cheese perfectly; it creates a deliciously gooey texture. Use Fresh Herbs: Fresh parsley and oregano really make a difference in chimichurri; if using dried, reduce the quantity to avoid overpowering the flavor. Choose Your Bread Wisely: Opt for high-quality crusty bread like sourdough; a chewy texture balances excellently with the juicy filling and makes for a hearty steak sandwich with chimichurri. Variations & Substitutions for Steak Sandwich with Chimichurri Feel free to let your creativity shine by customizing this steak sandwich recipe with exciting twists and substitutions! Lean Alternative: Substitute ribeye with flank steak for a leaner yet flavorful option, perfect for guilt-free indulgence. It’s tender when grilled right, just like the original. Cheese Swap: Experiment with different types of cheese, using Gruyère or provolone for a rich flavor profile. Each cheese offers a unique melt and taste that can elevate your sandwich dramatically. Green Crunch: Add arugula or spinach for a fresh crunch to brighten the hearty flavors. The peppery notes of arugula make a delightful contrast to the savory steak. Spicy Kick: Fulfill your heat craving by swapping chimichurri for a spicy aioli. Just mix mayonnaise with sriracha for a creamy, spicy alternative that brings the heat. Flavorful Herbs: Substitute parsley in the chimichurri with cilantro for a different flavor dimension that dances on your palate. It’s a fresh twist that amplifies the experience. Crispy Texture: Add fried onions or crispy shallots on top of your sandwich for a delightful crunch that complements the tender steak beautifully. The textural variation can be game-changing! Infuse with Smoke: For a smoky flavor, use smoked paprika in the garlic butter. This simple addition enhances depth, making each bite even more memorable. Vegan Option: Replace steak with grilled portobello mushrooms for a satisfying plant-based variation. They absorb flavors wonderfully and can be seasoned to perfection for a rich flavor profile. Use these variations to create your unique version of the steak sandwich that excites your taste buds! And if you’re in the mood for more delicious inspirations, why not check out my Bbq Chicken Sandwich or try making mouthwatering Breakfast Sandwiches Discover? Happy cooking! Make Ahead Options These Ribeye Steak Sandwiches with Chimichurri are a fantastic choice for meal prep enthusiasts! You can prepare the garlic butter, chimichurri, and caramelized onions up to 3 days in advance, allowing the flavors to meld beautifully. Simply roast the garlic, mix it with butter, and store in the fridge until ready to use. For the chimichurri, blend all ingredients and refrigerate it in an airtight container. The caramelized onions can also be sautéed and stored separately. When you’re ready to enjoy your sandwich, grill the steaks and bread as instructed, then assemble with your prepped components for delicious results with minimal effort! This preparation not only saves time but ensures your meal is just as flavorful as freshly made. What to Serve with Ultimate Ribeye Steak Sandwich with Chimichurri Pairing this delicious steak sandwich with the right sides can transform your meal into a dining experience. Sweet Potato Fries: Their crispy sweetness cuts through the richness of the sandwich, providing a lovely contrast. Serve them hot and seasoned for an irresistible crunch. Coleslaw: A creamy, tangy slaw adds freshness and a refreshing element, balancing the savory flavors of the sandwich beautifully. Each crunchy bite creates a delightful harmony with the steak’s richness. Grilled Vegetables: Zucchini, bell peppers, and asparagus brushed with olive oil bring a smoky, charred flavor to the table, complementing the grilled steak wonderfully. Plus, their vibrant colors make for an appealing presentation. Caesar Salad: Crisp romaine tossed with a rich dressing, crunchy croutons, and parmesan cheese offers a classic side that adds a creamy bite, perfect for offsetting the bold flavors of the chimichurri. Garlic Bread: This buttery, toasted delight is a crowd-pleaser and complements the garlic butter in the sandwich. The warm bread will have everyone diving in for more! Red Wine: A glass of full-bodied red wine elevates this meal, matching the savory intensity of the ribeye steak. Its tannins will bring out the richness and enhance the entire dining experience. How to Store and Freeze Steak Sandwich with Chimichurri Fridge: Keep any leftover sandwich wrapped tightly in foil or plastic wrap; it can be stored in the refrigerator for up to 3 days for best freshness. Freezer: For long-term storage, separate the components—store grilled steak and caramelized onions in airtight bags for up to 3 months; assemble and grill when ready to serve. Reheating: To enjoy leftovers, reheat the steak gently on a skillet to avoid drying it out, and warm the bread in the oven for a crispy finish. Components Storage: Store chimichurri in a jar or container with a tight-fitting lid; it stays fresh in the fridge for about a week, enhancing your next steak sandwich with chimichurri. Steak Sandwich with Chimichurri Recipe FAQs What type of bread is best for the steak sandwich? The best bread for this steak sandwich is a crusty sourdough; its chewy texture complements the juicy filling perfectly. If you can’t find sourdough, feel free to swap it out for any kind of chewy bread, such as ciabatta or a baguette, which will also hold up well against the delicious ingredients. How long can I store the chimichurri sauce? Chimichurri can be stored in a jar or container with a tight-fitting lid in the fridge for about a week. This zesty accompaniment not only enhances the flavor of your steak sandwich but can also be used as a marinade or dressing for salads, extending its use beyond just the sandwich. Can I freeze the steak and onions for later use? Absolutely! For long-term storage, it’s best to separate the components. Store the grilled ribeye steaks and caramelized onions in airtight bags or containers for up to 3 months. When you’re ready to enjoy, simply thaw them in the fridge overnight and reheat gently on the stove before assembling your sandwich. What should I do if my garlic butter turns out bitter? If your garlic butter tastes bitter, it’s likely because the garlic was burnt during roasting. To avoid this, make sure to roast at 400°F for the right timeframe (40-60 minutes) and check periodically. If your garlic does burn, I recommend starting over, as fresh roasted garlic is what elevates the flavor of your steak sandwich with chimichurri. Is this steak sandwich recipe suitable for dietary restrictions? This recipe is quite versatile! If you’re allergic to dairy, consider using a plant-based butter alternative and skipping the cheese altogether. Additionally, those with gluten sensitivities can replace the bread with a gluten-free variety. For a lower-calorie option, flank steak can be used instead of ribeye without losing the great flavor! How can I tell when the ribeye steaks are perfectly cooked? For medium-rare steaks, aim for an internal temperature of about 130°F. Use an instant-read meat thermometer to check. Additionally, grilling for about 3-4 minutes per side typically yields a deliciously juicy steak. Remember to let them rest for about 5-10 minutes after grilling, which allows the juices to redistribute, ensuring a succulent sandwich! Juicy Steak Sandwich with Chimichurri to Elevate Lunch Elevate your meal with this flavorful Steak Sandwich with Chimichurri, featuring juicy ribeye and zesty toppings. Print Recipe Pin Recipe Prep Time 30 minutes minsCook Time 20 minutes minsCooling Time 5 minutes minsTotal Time 55 minutes mins Servings: 2 sandwichesCourse: LunchCuisine: AmericanCalories: 800 Ingredients Equipment Method Nutrition Notes Ingredients 1x2x3x? For the Garlic Butter1 bulb Garlic Provides rich flavor; substitute with garlic powder if necessary.4 tablespoons Unsalted Butter Salted butter can be used instead.For the Sandwich2 slices Crusty Bread (Sourdough) The base of the sandwich; any chewy bread can work.2 pieces Ribeye Steaks Bring them to room temperature for optimal grilling.4 ounces Low-Moisture Mozzarella Cheese Melts beautifully; Gruyère or provolone are good alternatives.1 medium Yellow Onion Adds sweetness when caramelized; sweet onions are a great substitute.For the Chimichurri1 cup Parsley Leaves Provide freshness; cilantro can be used for a different flavor.1 tablespoon Oregano Leaves Adds earthiness; dried oregano is acceptable but use less.2 cloves Garlic Intensifies chimichurri flavor; you can use more if desired.2 tablespoons Red Wine Vinegar This gives the chimichurri tang; apple cider vinegar is a suitable substitute.½ cup Extra-Virgin Olive Oil Binds the chimichurri together; any high-quality oil works well.1 teaspoon Red Pepper Flakes Adds heat; can be omitted or swapped for fresh chili if preferred.For Seasoning1 teaspoon Kosher Salt Enhances all flavors; sea salt can be used as a substitute.½ teaspoon Black Pepper For seasoning; freshly cracked is preferred. Equipment GrillSkilletFood ProcessorAluminum Foil Method Step-by-Step InstructionsPreheat your oven to 400°F (200°C). Wrap a whole garlic bulb in aluminum foil and roast it for 40-60 minutes until soft and caramelized. Once cooled, squeeze the garlic cloves into a bowl and mash them with 4 tablespoons of unsalted butter until well combined.Slice your crusty sourdough bread in half horizontally. Scoop out a small portion from the top half to create a well for your ingredients. Spread the garlic butter inside both halves.In a skillet over medium heat, add 2 tablespoons of olive oil and thinly sliced yellow onions with a pinch of kosher salt. Sauté for about 25 minutes until caramelized.Combine parsley, 1 tablespoon oregano, 2 minced garlic cloves, 2 tablespoons red wine vinegar, and a pinch of salt in a food processor. Blitz and drizzle in olive oil while mixing.Bring ribeye steaks to room temperature for 30 minutes. Season with kosher salt and black pepper. Preheat grill to high and cook steaks for 3-4 minutes per side.After cooking, rest steaks for 5 minutes. Heat a grill pan and place sourdough halves on the grill, buttered side down, for about 2-3 minutes until golden brown. Add mozzarella on the bottom half.Spread chimichurri on the top half of the grilled sourdough. Place grilled ribeye and caramelized onions on the bottom half. Close the sandwich and slice in half. Nutrition Serving: 1sandwichCalories: 800kcalCarbohydrates: 40gProtein: 50gFat: 50gSaturated Fat: 20gPolyunsaturated Fat: 5gMonounsaturated Fat: 15gCholesterol: 150mgSodium: 1200mgPotassium: 800mgFiber: 3gSugar: 5gVitamin A: 500IUVitamin C: 10mgCalcium: 250mgIron: 3mg NotesAllow steaks to rest after grilling for juiciness. Prep chimichurri and garlic butter in advance to enhance flavors. Tried this recipe?Let us know how it was!