01 -
1/2 cup unsalted butter, softened.
02 -
1/2 cup brown sugar.
03 -
1/2 cup granulated sugar.
04 -
1 large egg, room temperature.
05 -
2/3 cup creamy peanut butter.
06 -
1 teaspoon vanilla extract.
07 -
1 1/4 cups all-purpose flour.
08 -
1/2 teaspoon baking soda.
09 -
1/2 teaspoon salt.
10 -
8 ounces semi-sweet chocolate, chopped.
11 -
1 teaspoon vegetable oil.
12 -
8 ounces mascarpone cheese, room temperature.
13 -
1/2 cup toffee bits or chopped peanuts for topping.