Healthy brownie mix recipe from scratch is WAY better than a Betty Crocker package and uses just 5 ingredients.
Dry Ingredients
Wet Ingredients
** Each ingredient on their own is self-stable for much longer than 6 months, but I capped it at 6 months because I don’t know what type of add-ins you’re using… which may or may not effect the shelf-life of the mix as a whole. If you want the brownie mix to be shelf-stale for longer than 6 months, prepare the dry ingredients and leave out the add-ins. Then incorporate the add-ins when you’re ready to bake brownies.
Find it online: https://dontwastethecrumbs.com/brownie-mix-recipe/