No Bake Crispy Snickers Bars

Ingredients:

Crispy Chocolate Top and Bottom Layer:

12 ounces semi-sweet chocolate chips, divided
11 ounces butterscotch chips, divided
1 cup creamy peanut butter, divided
3 cups Cocoa Pebbles, divided
Nougat Layer:

1/4 cup unsalted butter
1 cup granulated sugar
1/4 cup evaporated milk
7 ounces marshmallow creme
1/4 cup creamy peanut butter
1 1/2 cups roasted lightly salted peanuts, coarsely chopped
1 teaspoon vanilla extract
Caramel Layer: