Question about BROWNIES~

Just wondering...Say I want to cook up some brownies for just myself....I'm guess that it is very much possible to make only one brownie....I plan on using about 7.5 grams of some mid-grade bud
I know chronic brownies are what everyone else usually makes...I usually use mid-grade...I just need to know how much butter/oil I should use....And how much brownie mix..lol
tip and more advice is appreciated

find out how much butter you need for a pan of brownie mix. Melt the butter and put the weed in it. Let it cook till the butter is black ish brown nasty color. It should stink like hell too.. Strain the weed out of the butter and voila...make the brownies. Make sure you dont get it too hot when cooking the butter..and stir it frequently. You dont want it to burn.