These may be no-bake, but they still need to chill for 8 hours!
Ingredients
2½ cups heat-treated all-purpose flour (see Note)
1 tbsp cornstarch
1 tsp baking soda
1 tsp kosher salt
2 sticks unsalted butter, softened
1½ cups smooth peanut butter (preferably Skippy)
¾ cup light brown sugar
¼ cup granulated sugar
½ cup pasteurized egg whites, room temperature (see Note)
1 tbsp vanilla extract
For the Mix-Ins
Triple P
1 cup Reese’s pieces or peanut butter m&m’s, chopped
10 Reese’s Peanut Butter Cups, cut into pieces
Fluffernutter
1 cup Marshmallow Fluff
1¼ cups chopped dark or milk chocolate
PB&J
1 cup chopped peanuts
1 cup seedless jam
Directions
Whisk the flour, cornstarch, baking soda and salt together in a medium bowl.
Combine the butter and peanut butter in the bowl of a stand mixer fitted with paddle and beat until smooth, scraping bowl a few times.
Add sugars and beat until light and fluffy, about 3 minutes, scraping the bowl a few times. Add the egg whites and vanilla and mix well until incorporated, ~3 minutes longer.
Add the flour in two batches, mixing well after each. Remove the bowl from stand and fold in additional ingredients (see below).