1 1/2 c. Quaker Oats
1 c. butter
1 c. flour
1/2 c. brown sugar
1/2 c. white sugar
1 egg yolk
1/2 tsp. baking soda

Cream butter and sugar. Add egg yolk. Sift flour and soda. Add oatmeal last. Roll into small balls. Flatten dipped in sugar. Bake 10 minutes, 375 degrees. Spread melted Hershey bar on cookies and cool in refrigerator.