Pre-heat oven to 350 degrees.
Prepare your baking pans or muffin pan by spraying them with non-stick spray. Set aside.
In a large bowl combine the dry ingredients from the yellow cake mix, and both boxes of Jiffy cornbread mixes, stirring to combines.
Add the ingredience listed on the back of each of the boxes (your ingredients may vary from ours).
In our case that is: 5 eggs, 2/3 cup milk, 1/2 cup oil and 1 cup water
Mix all of the ingredients together until thoroughly combined. Do not over mix and there is no need to use a mixer.
Pour contents into your prepared 9" x 13" baking pan or Muffin tray. Bake for 25 - 35 minutes or until an inserted toothpick is clean when removed.