Well... if the amount of canna oil you want to put in the recipe were smaller enough than the amount of butter required, you can just add the oil to the butter.
But if the amounts of canna oil and butter were close, it would be better to replace the butter with the oil, cause if you added both the amount of total fat in the recipe would be almost doubled and this could mess with the recipe.
There is plenty of brownie recipes in this forums... or if you want to try something very easy and VERY enjoyable, try this...
http://boards.cannabis.com/recipes/1...iros-weed.html

:thumbsup:


2,400th post! :rastasmoke: