1. Preheat the oven to 350°F (180°C).

2. Grease a baking pan and line it with parchment paper.

3. In a bowl, mix together the flour, sugar, and a pinch of salt.

4. Cut the cold butter into small pieces and add it to the flour mixture.

5. Using your fingers, work the butter into the flour until the mixture becomes crumbly.

6. Press the mixture into the prepared baking pan and spread it evenly.

7. Bake in the preheated oven for about 15 minutes or until the edges are golden brown.

8. Meanwhile, melt the caramels and milk in a small saucepan over low heat, stirring occasionally.

9. Once the edges of the crust are golden brown, remove from the oven and let it cool.

10. Pour the melted caramel over the crust and spread it evenly.

11. Sprinkle the peanuts and peanut butter chips over the caramel.

12. Top with white chocolate chips.

13. Return to the oven and bake for an additional 10-12 minutes or until the top is golden brown.

14. Remove from the oven and let it cool completely before cutting into bars.

15. Enjoy the delicious peanut butter caramel bars!