Chocolate Outrage Snack Cake
["1 c. (2 sticks) butter or margarine, softened", "1 1/3 c. oatmeal (uncooked)", "1/2 c. flour", "1 c. firmly packed brown sugar", "2 eggs", "1/2 c. walnuts (optional)", "1 tsp. vanilla extract", "12 oz. pkg. semi-sweet chocolate morsels, divided"]
["In a large bowl, combine butter or margarine, oatmeal, flour, brown sugar, eggs, walnuts and vanilla.", "Beat 3 minutes at medium speed until fluffy.", "Stir in 1 cup of chocolate chips.", "Spread batter in an 8-inch square micro-safe pan.", "Cover with wax paper; microwave on High 4 minutes.", "Rotate 1/4 turn; microwave on High 4 to 5 minutes or until top appears dry and bottom is an even color. Sprinkle remaining chips over top of warm cake.", "Let stand 10 minutes and spread evenly over cake."]
["butter", "flour", "brown sugar", "eggs", "walnuts", "vanilla extract", "semi-sweet chocolate morsels"]