1. In a large mixing bowl, beat 1 cup of unsalted butter with 0.75 cup granulated sugar and 0.75 cup packed brown sugar until light and fluffy.

2. Add 2 large eggs and 2 teaspoons of vanilla extract. Beat until combined.

3. In a separate bowl, whisk together 2.25 cups of all-purpose flour, 1 teaspoon of baking soda, and 0.5 teaspoon of salt.

4. Gradually add the dry mixture to the wet mixture, mixing until a soft dough forms.

5. Fold in 1 cup semi-sweet chocolate chips and 1 cup peanut butter chips.

6. Chill the dough for at least 30 minutes.

7. Scoop 2-tablespoon portions onto a parchment-lined baking sheet.

8. Bake at 350°F (175°C) for 10–12 minutes, until edges are golden and centers look slightly soft.

9. Let cookies rest on the baking sheet for 5 minutes, then transfer to a wire rack to cool.