Reese's Pieces Peanut Buttery Brownies

INGREDIENTS

1 cup

unsalted butter, room temperature

2 1/2 cups

granulated sugar

1/2 cup

creamy peanut butter

large eggs

1 1/2 tbsp

vanilla

1 1/2 cups

all-purpose flour

1 cup

unsweetened cocoa powder

1 tsp

salt

1 1/2 cups

chopped peanut butter cups ((about 28 peanut butter cups; note that there are about 38 in a 12 oz. bag))

1/2 cup

Reese's Pieces