Blueberry-Lemon Chess Squares
    * 2 cups fresh or frozen blueberries, rinsed
    * 1 tablespoon granulated sugar
    * 2 tablespoons fresh lemon juice
    * zest of 1 lemon, divided
    * 1 box yellow cake mix, butter or lemon
    * 4 eggs, divided
    * 1 stick butter or margarine, softened
    * 2 3/4 cups confectioners' sugar
    * 1 (8 oz.) cream cheese 
In a bowl, combine blueberries with sugar, lemon juice and half of the lemon zest. Set aside.
Mix cake mix with 1 egg, softened butter and the remaining lemon zest. Pat into a buttered and floured 13- x 9-inch baking pan.
In a mixing bowl with hand-held electric mixer, beat confectioners' sugar with cream cheese and remaining 3 eggs until smooth. Gently stir in blueberry mixture; pour over cake. Bake in a preheated 325° oven for about 45 to 55 minutes, or until browned. Let cool completely; chill and cut into squares.
Serve with fresh blueberries and a dusting of confectioners' sugar, if desired. Store in the refrigerator.
Cookies 'n Cream Chess Bars
These will be popular with the kids! For polka-dot chess squares, sprinkle with chocolate chips instead of cookie crumbs.
    * 1 fudge or chocolate cake mix
    * 4 eggs, divided
    * 1 stick margarine or butter, melted
    * 1 (8 oz.) package cream cheese, room temperature
    * 2 3/4 cups confectioners sugar
    * 1 teaspoon vanilla
    * 8 to 12 Oreo cookies or a packet of Mini Oreos, coarsely crumbled 
Mix cake mix with 1 egg and margarine; press into greased and floured 13- x 9-inch pan.
In a mixing bowl with an electric hand-held mixer, beat confectioners' sugar with cream cheese, vanilla and 3 eggs until smooth. Pour about 2/3 of the topping mixture onto the cake mixture; sprinkle with crumbled oreos (or chocolate chips) then pour remaining mixture evenly over crumbs. Bake in a preheated 325° oven for about 50 to 60 minutes, or until topping is lightly browned.
Cool thoroughly and cut into bars. Keep refrigerated.