1 cup peanut butter bits
1 can (14 oz) sweetened condensed milk, divided
1/2 stick butter (4 tbsps)
1 cup semisweet chocolate bits
1/4 - 1/2 cup chopped peanuts
Lightly butter or spray an 8-inch square pan. In a small microwave-safe bowl, place the peanut butter bits, half the sweetened condensed milk, and 2 tablespoons of the butter. Cover with plastic wrap. In another small micro-wave safe bowl, place chocolate bits, remaining sweetened condensed milk, and 2 tablespoons butter.
Microwave the peanut butter bit mixture on high for 3 minutes. Remove from microwave and stir until creamy smooth. Pour into the prepared square pan and spread evenly. Microwave the chocolate mixture on high for 3 minutes. Remove from the microwave, stir until creamy and pour over the peanut butter mixture in the pan, spreading evenly. Sprinkle the chopped peanuts over the top and press in lightly. Chill at least 2 hours to firm. Cut into 16 squares.
Option: If you prefer, stir peanuts into the chocolate before spreading over the peanut butter layer.