Peanut Butter Chocolate Chip Cookie Dough Cake

INGREDIENTS

3 cups

all purpose flour

2 tsp

baking powder

1 tsp

salt

2 sticks

unsalted butter, softened

1 1/2 cups

brown sugar

eggs

2 tsp

vanilla extract

1 cup

semisweet chocolate chips

1 cup

peanut butter chips

1/2 cup

sugar

1/4 cup

egg whites (from about 2 large eggs)

1 1/2 tsp

vanilla extract

1/4 cup

creamy peanut butter

6 tbsp

chilled unsalted butter, cut into 1/4-inch cubes

salt

1 1/2 sticks

unsalted butter, softened

1/3 cup

brown sugar

1/3 cup

all purpose flour

1/2 tsp

salt

2 tsp

vanilla extract

4 cups

powdered sugar

1/3 cup

heavy whipping cream