Preheat oven to 350 degrees. Line a 9x13 inch pan with aluminum foil and spray with cooking spray. This helps for easy removal.
In a large mixing bowl combine melted butter, brown sugar, and sugar. Mix until incorporated. Add eggs and vanilla and mix. Add flour, salt, and baking soda. Mix until the dough comes together. Fold in chocolate chips. Spread half of the dough into the bottom of your 9x13. (A little more than half if needed) Bake for 8-9 minutes.
While the dough is baking prepare the peanut butter caramel. In a microwave safe bowl, add caramels and heavy cream. Cook for 30 seconds at a time stirring to be careful that it doesn't burn. Once melted, add in the peanut butter and vanilla and mix until smooth. (You can also melt the caramel over the stove in a saucepan)
Drizzle the peanut butter caramel on top and spread evenly. Crumble remaining dough on top of the caramel. Bake for an additional 18-20 minutes or until lightly brown. Remove from the oven and allow to completely cool before cutting.