1/2 c. sugar
1/2 c. packed brown sugar
1 egg
1/2 c. butter
1/3 c. peanut butter
1 c. whole wheat flour
1 c. regular oats
1/2 tsp. baking soda
1/4 tsp. salt
Peanut Butter Frosting (below)
3 tbsp. cocoa
1 tbsp. milk

Heat oven to 350 degrees. Grease a 9x13 inch pan. Mix sugars, egg, butter and peanut butter in large bowl. Stir in flour, oats, baking soda and salt. Spread in pan. Bake until golden brown, 17-22 minutes. Cool.

Prepare Peanut Butter Frosting; reserve 1/3 cup. Stir cocoa and milk in remaining until smooth. If needed, stir in additional milk until of spreading consistency. Frost squares with cocoa frosting.

Drop Peanut Butter Frosting by teaspoonfuls onto cocoa frosting; swirl for marbled effect. Cut into 1 1/2 inch squares. About 4 dozen cookie bars.

PEANUT BUTTER FROSTING:

1/2 c. powdered sugar
1/4 c. peanut butter
2 tbsp. milk

Mix ingredients in small bowl. Stir in additional milk, 1/2 teaspoon at a time, until spreading consistency.