first time pot cookies

Im making pot cookies tonight and the bag says in need 1/2 cup of butter. how do i make 1/2 cup of pot butter? and how much bud should i use?
thanks for any help.

Your going to need a flux capacitor.

Or you can just simmer the butter in a pot and put the weed in and let them sit in there for a bit/while. Then strain the leaf/bud out. Use as much bud as you want. Make potent cookies or make weak cookies. I'd say put 1/8 in for your first time and see how you like it.