I Miss Cookie Monster Chocolate Cake!

This is one chocolate cake I will forever remember from my childhood! I wish somebody wrote the recipe. I would love to make it. I haven't had Cookie Monster Chocolate cake for decades I still remember how it taste like. I found a frosting recipe that was close. I just have to look for the caramel filling recipe. As for the cake, well, that will be a real challenge. But the frosting is the best part.

Auntie Prescy makes it! I would lick the pot every she makes the frosting! It's that good! And really simple to make!

Chocolate Fudge Frosting
3/4 c sugar
1/4 c cocoa
2 T cornstarch
1 c milk
1 T butter
1 t vanilla

Mix all dry. Add milk in a steady stream. Make sure there are no lumps. Cook till it begins to thicken. Remove from heat. Stir in butter to finish (gives it that sheen) and stir in vanilla extract.

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Chocolate Cake
Stage I
Cream butter and sugar. Add eggs one at a time.
1 1/2 c butter
3 c sugar
3 eggs


Stage II
Add dry ingredients.
3 1/4 c APF or Cake Flour (there will be a slight difference in texture)
3/4 t salt
3/4 c cocoa
3 t baking powder
3 t baking soda

Fold in 1 c of sour cream (store bought or make your own, mayo is a good sub too)
1/2 c milk
1/2 water
1 T vinegar
Let it sit until you're ready to mix.

Add 1 1/2 c boiling water to finish.

Pour in a 13x9 greased plan.

Bake at 350F until done (about 1 hour).

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Semi-Homemade Option

Use store bought Devil's Food Cake (I like Duncan Heinz).
Follow directions on the box.
Add 1 c of Mayo or Sour Cream. (honestly, I prefer Mayo. Keeps the cake soft and moist!)

Bake as directed.
Frost.

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So does anybody have the recipe for the caramel filling?