Preheat the Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Cream Butter and Sugars: In a large mixing bowl, beat the softened butter, peanut butter, brown sugar, and granulated sugar until light and fluffy (about 2–3 minutes).

Add Eggs and Vanilla: Beat in the eggs, one at a time, ensuring each is fully incorporated. Stir in the vanilla extract until smooth.

Mix Dry Ingredients: In a separate bowl, whisk together the flour, baking soda, baking powder, and salt.

Combine Wet and Dry Ingredients: Gradually mix the dry ingredients into the wet mixture until a soft dough forms. Be careful not to overmix.

Shape and Flatten the Dough: Scoop out about 2 tablespoons of dough per cookie and roll into balls. Place them 2 inches apart on the prepared baking sheet. Use a fork to press down lightly, creating a crisscross pattern on each cookie.

Bake the Cookies: Bake for 10–12 minutes, or until the edges are golden but the centers remain soft.

Cool and Serve: Let the cookies cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. Enjoy warm or at room temperature!