Follow the instructions on the box, I used the cake-like brownies option, but the normal brownie option is fine as well. Add the vanilla with the wet ingredients.

Add cinnamon, tajin, and chili powder as desired. I’d recommend adding a little bit at a time and tasting until you’re satisfied.

Bake according to the box. (This depends on what type of pan you use)

Let cool and serve with whipped cream or whatever you want.