Oven set to pre-warm at 375 degrees F. Place cake mix into bowl. Stir dry ingredients to make sure lumps are gone. Add cornmeal muffin mix. Mix together. Add eggs, water (subbing water for milk), 1/4 cup oil, and 1/2 tsp vanilla extract. Stir until well blended (can use hand mixer). Pour into greased 9 x 9 inch square pan. Sprinkle lightly with just a couple teaspoons of sugar onto the top. Cook. Remove from oven when browned lightly on edges and toothpick comes out clean. Immediately butter the top with a couple of tablespoons butter at room temp. Great for emergency meals, and my kids love it and can make it themselves while I prep the rest of the meal. This can be adjusted to a regular cake mix and one or two boxes of Jiffy cornbread muffin mix. Depends what is on hand.