Peanut Butter Fingers

1 1/2 sticks butter
1/2 cup sugar
1 cup + 2 Tbs Brown sugar
2 eggs
1 cup peanut butter
1 tsp vanilla
cream the above ingredients together and add

3/4 tsp soda
1/2 tsp salt
1 1/2 cups flour
1 3/4 cups oatmeal

Blend well. Place on buttered cookie sheet with sides and press out evenly. Bake in 350 oven for 10 min. Do not over bake. Remove from oven and let cool to warm. Spread a thin layer of peanut butter over the top of the warm cookie dough. Make the following frosting and spread over the top.
1 stick butter
4 Tbsp cocoa
6 Tbsp water
Bring the above to a boil. Add 3 1/2 cups powdered sugar. beat until creamy. Add 1 Tbsp vanilla. Beat and pour over cookie dough. Spread to cover. Chill for a short while to help set up.