If you like peanut butter, you will like this. It's more of a snack cake than a dessert cake: not really rich. But addicting.
Peanut Butter Cake
Combine in a small bowl:
½ c flour
½ c brown sugar
¼ c peanut butter
2 T melted butter
Cream ½ c peanut butter and ¼ c shortening. Slowly beat in 1 cup brown sugar and 2 eggs.
Combine 2 cups flour, 2 tsp baking powder, ½ tsp salt, and ½ tsp baking soda. Mix well. Add flour mixture alternately with 1 cup milk to the peanut butter mixture, beating all the time.
Spread batter in a greased 9x13, and sprinkle with the crumbly mixture. Bake for 30-35 minutes or until toothpick comes out clean. Drizzle with icing, if desired.