1 c Butter or margarine; soft

1 1/2 c Oatmeal; quick -OR-

- Old fashioned, uncooked 1/2 c All-purpose flour

1 c Brown sugar; firmly packed

2 Eggs

1 c Walnuts; chopped

1 ts Vanilla

12 oz Semi-sweet chocolate chips:

- divided In large mixer bowl, mix butter, oats, flour, brown sugar, eggs, walnuts and vanilla. Beat 3 minutes at medium speed or until mixture is light and fluffy. Stir in 1 cup chocolate chips. Spread batter into 8" square microwave-safe baking dish; cover with wax paper. Cook on HIGH power 4 minutes; rotate dish 1/4 turn. Cook on HIGH power 4-5 minutes longer or until top of cakeappears dry and bottom is an even color. Sprinkle remaining 1 cup chocolate chips over top of warm cake. Let stand 10 minutes, then spread chocolate evenly over cake. Cool directly on counter top. Cut into serving pieces.