Place the parchment paper in the baking pan to keep the fudge from sticking.
Mix the dry ingredients in the large mixing bowl.
Stir in the powdered sugar and the cocoa.
Mix the peanut butter and cannabutter in the saucepan and melt on low heat.
Add the vanilla extract.
Pour the melted butter into the bowl containing the cocoa and sugar, and stir until the mixture is smooth.
At this point, add in any optional ingredients such as nuts.
Pour the mixture into the baking pan, and use the spatula to spread out the fudge.
Refrigerate for 3 three hours or until firm.
Cut the fudge into 2,54 cm pieces (or smaller depending on how potent your fudge is).
The fudge will be good for a month when stored in the refrigerator.
Notes
You can adapt the recipe in case you are using more or less flower, or if you want to substitute ingredients. Coconut oil works well and gives the fudge a distinct flavor, and ghee butter can also be an effective substitute.