3 cups butter
3 cups white sugar
3 eggs
1 teaspoon vanilla extract
1 (1 ounce) square unsweetened chocolate
Preheat oven to 350 degrees F (175 degrees C). Grease and flour 2-1/2 quart casserole dishes.
In a medium bowl, cream together the butter divide peanut butter, white sugar, eggs and vanilla until light and fluffy. Beat in chocolate by hand. Put the dough into one of the prepared pans. Brush with water on both sides of each roll.
Bake in the preheated oven for 20 minutes, or until browned and a toothpick inserted into the center comes out clean. Remove rolls from oven and cool on rack.