When making brownies you wannna use anywere from .5grams to 1 gram per person/serving. I used regular brownie mix with mine. But there is a trick to it:

THC is Fat soluable, so you wanna fry the cannabais in butter before you bake your brownies. You then take the butter and replace it with the vegetable oil the package will ask for.

I used 3 grams per a box of brownies (6 servings) and it was a great high, but it took 3 hours to get to its "climax of highness"

You might also want to change up the amount of marijuana based on the potency of the MJ. Here in Seattle our stuff is more potent than a lot of places, so if your growing in LA or somewere with low potent MJ add more weed.

Have a good time