This is hardly earth-shattering, but in the spirit of the internet, which has guided me through many baking and cooking quandaries, allow me to answer this question:
Can you use coconut oil instead of regular vegetable oil in a boxed brownie mix?
Yes, you can. Melt it so it is liquid. You might also consider adding a teaspoon or two of vanilla. The coconut flavor isn’t overwhelming, and you might not even be able to identify it, but it creates a much richer, more complex taste than a boxed mix usually does.
I made brownies last night using a Ghirardelli mix, which I think are the best of the mixes commonly available in most stores. I used melted coconut oil and a splash of vanilla along with the water and egg called for by the instructions. Cheers for dressing up a boxed brownie recipe during strange times.