Cream butter, sugars,1/3 c. peanut butter and egg. Add soda salt, vanilla, flour, oatmeal. Mix. Press into a 9X13 pan. Bake at 350° for 15 minutes. Right out of the oven sprinkle with chocolate chips on top of the cookie and let melt. Set aside. (I like to pop the pan into the fridge for about 20 minutes to speed up the hardening of the chocolate) Mix 2 cups powdered sugar, 1/2 c. peanut butter and little milk to thin the frosting. Spread on top of cookie and chocolate mixture.
Keyword Chocolate, Cookie Bar, Cookies, Frosting, Peanut butter