1. Preheat oven to 375°F (190°C) and grease a 9×13-inch baking pan.

2. In a medium bowl, combine flour, baking soda, and salt. Set aside.

3. In a large bowl, cream together softened butter, granulated sugar, and brown sugar until fluffy.

4. Add eggs one at a time, beating well after each, then mix in vanilla.

5. Gradually stir in dry ingredients until fully combined.

6. Fold in chocolate chips and chopped pecans.

7. Spread half of the cookie dough evenly into the prepared pan.

8. Bake for 8–10 minutes and remove from oven.

9. Meanwhile, melt the caramels with evaporated milk in a double boiler or saucepan over low heat, stirring until smooth.

10. Stir in the peanut butter until fully melted and combined.

11. Pour caramel mixture evenly over the baked cookie layer.

12. Drop spoonfuls of remaining dough over the caramel and spread gently.

13. Bake for another 15–20 minutes until golden brown.

14. Cool completely before slicing into bars.