Line your pan with the crackers.

Then add your mixed brownie batter over the crackers and spread evenly. 

Bake according to directions of box, just pull it out about 10 minutes earlier than it says. 

If you don’t like gooey center, then bake it all the way. 

Spread the fluff while cake is warm. 

Bake on 350 for 15/20 minutes till the top is nice and brown. Keep an eye out that the fluff doesn’t burn. 

Remove and let cool before cutting.