Ingredients:
1 package of Duncan Hines Moist Deluxe Lemon Supreme Cake Mix
1/2 cup (1 stick) butter
1 large egg
1 (14 ounce) can sweetened condensed milk
1/2 cup lemon juice
Instructions:
Preheat oven to 350°F. Stir together cake mix, butter and egg. Spread mixture evenly into bottom of a 13×9-inch baking pan.
Blend together sweetened condensed milk and lemon juice, Pour mixture over top of cake mix mixture.
Bake for 23 to 27 minutes. Cool completely. Cut into 1 1/2×3 1/4-inch bars.