Looking for recipe for chocolate sheet cake that uses a cake mix?

My sister in law made a chocolate sheet cake that tastes exactly like an homemade Texas sheet cake. She said she got the recipe from the back of the box of (what she thought) was Betty Crocker cake mix. I looked on the back of every cake mix in Walmart and had no luck in finding it. Does anyone know of this recipe that tastes like a Texas sheet cake but uses a cake mix to make it???? Thanks in advance.Looking for recipe for chocolate sheet cake that uses a cake mix?
if you go to this link and scroll to 1963, you will see texas sheet cake.


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http://www.bettycrocker.com/CommunityFor鈥?/a>Looking for recipe for chocolate sheet cake that uses a cake mix?
Texas Sheet Cake is just a chocolate cake! It uses almost the same ingredients as any other chocolate cake. I have about a dozen different recipes for that nasty stuff.





I have used a devils Food chocolate cake mix, 1 package double fudge chocolate pudding mix (dry), cold strong coffee instead of the water, 1/2 cup mayonnaise instead of the oil, and the eggs called for.





The next time I made that I added 2 teaspoons cinnamon to the mixture.





And then the next time I made it into a ';Better than S** Cake';


When you take it out of the oven, poke holes in it with handle of wooden spoon, pour vanilla pudding over it, top that with a package coconut, let cool then put on a carton of Cool Whip, sprinkle over that 2 cups mini chocolate chips, 2 cups pecans, and put another small carton of Cool Whip and drizzle with chocolate syrup.
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