Base:
1 Box Yellow Cake Mix (If making from scratch, about 18.25 oz cake mix)
1 Egg
4 oz Melted Butter
Filling
16 oz Powdered Sugar
5 Tbs Cocoa Powder
1 Tsp Chilie Powder (Sorry, don't know which chili it is)
1/4 tsp Cinnamon
8 oz Cream Cheese
2 Eggs
4 oz melted butter
Mix first crust together and press in to the bottom of a 9x13 rectangle, 10" round or 11" tart pan.
Combine first four filling ingredents in a bowl and whisk to combine
Beat Cream Cheese until smooth and add in dry mixture. Mix on slow and add in eggs & butter. and mix until smooth, scraping down the sides occasionally
Pour filling over crust and bake at 300 for 45 minutes. Remove and allow to cool fully before attempting to cut, this is not an eat it hot cake

Comes out good, just a hint of heat on the end, if you like it hotter, then you'll want a hotter powerd and/or more.