1 c. butter butter, softened
1 1/2 c. Quaker oats, uncooked
1/2 c. flour, all purpose
1 c. brown sugar, firmly packed
2 eggs, or 4 egg whites for low cholesterol
1 c. walnuts, chopped
1 tsp. vanilla
2 c. semi-sweet chocolate morsels, divided

Beat top 7 ingredients medium speed for 3 minutes until light and fluffy. stir in 1 cup morsels. Spread batter into 8 inch square microwave safe baking dish; cover dish 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 cake appears dry and bottom is even color. Sprinkle remaining 1 cup morsels over top of warm cake. Let stand 10 minutes, then spread chocolate over cake. Cool on counter.