Prepare Ingredients: Gather all your ingredients for the Hoisin Beef Noodles. Slice the beef into thin strips, chop your mixed vegetables into bite-sized pieces, and cook the noodles according to the package instructions. Drain and set the noodles aside.

Cook Beef: Heat a large skillet over medium-high heat and add cooking oil. Once the oil shimmers, add the beef strips in a single layer and sear for 2-3 minutes until browned. Stir occasionally.

Add Vegetables: Toss in your chopped vegetables into the skillet. Stir-fry for about 3-4 minutes until they become tender-crisp while retaining their colors.

Combine with Noodles: Add the cooked noodles into the skillet with the beef and vegetables. Pour in the hoisin sauce and toss to coat evenly. Stir-fry for about 1-2 minutes.

Serve: Remove from heat and top with a fried egg if desired. Serve immediately while hot, possibly with pickled veggies on the side.