In a large mixing bowl, cream together the butter and peanut butter until smooth and fluffy. Gradually mix in the brown sugar and granulated sugar until well combined.

Add the egg and vanilla extract, mixing on low speed until fully incorporated.

In a separate bowl, whisk together the flour, baking soda, and salt. Gradually mix this dry mixture into the wet ingredients until just combined.

Gently fold in the chocolate chips, ensuring they are evenly distributed in the dough.

Drop tablespoon-sized amounts of dough onto lined baking sheets, spacing them about 2 inches apart.

Preheat your oven to 375°F (190°C) and bake for 8-10 minutes for small cookies or 11-12 minutes for jumbo cookies until edges are lightly golden.

Remove from the oven and let cookies cool on the baking sheets for about 5 minutes before transferring to a wire rack to cool completely.