2/3 c. butter, softened
1 c. firmly packed brown sugar
1 c. old-fashioned oats
1 tsp. baking powder
1/2 tsp. salt
1 1/2 c. all-purpose flour
1 (15 oz.) can sweetened condensed milk
1/2 c. lemon juice
2 egg yolks
1 tsp. grated lemon rind

Cream butter and brown sugar; stir in oats and dry ingredients. Mix until crumbly. Spread half of mixture in greased 13 x 9 x 2 inch pan, packing firmly. Combine condensed milk, lemon juice, egg yolks, and lemon rind; let stand 1 minute to thicken. Spread over crumb crust. Sprinkle with remaining crumb mixture. Bake at 350 degrees for 25 minutes in pan. Chill in refrigerator until firm. Cut into 1 3/4 inch squares. Yield: 2 dozen.