E.T. Bars

1/2 c. butter
1/2 c. white sugar
1/2 c. brown sugar
1 egg
1/3 c. peanut butter
1/2 tsp. baking soda
1/4 tsp. salt
1/2 tsp. vanilla
1 c. flour
1 c. oats
1/2 large pkg. Reese's Pieces
1 6-oz. pkg. chocolate chips
1/2 c. sifted powdered sugar
1/4 c. peanut butter
1-2 T. milk

Cream butter, white and brown sugars. Blend in egg, 1/3 cup peanut butter, baking soda, salt, and vanilla. Stir in flour and oatmeal and Reese's Pieces. Pour into greased 9 x 13-inch pan and bake at 350 degrees for 20-25 minutes. While cooking, cream powdered sugar, 1/4 cup peanut butter, and enough milk to make mixture spreading consistency. Remove pan from oven and sprinkle bars with chocolate chips. Let stand 5 minutes, then spread like frosting. Swirl peanut frosting over chocolate topping. Let cool thoroughly.