That depends on how much you make and how you like it to taste. This particular recipe, I just use the fly-by-the-seat-of-your-pants method of cooking. It's too simple to really muck up.

The peanut butter I use is 1.5g (ecc) per tablepsoon. Cream cheese is 0.386g per tablespoon. The baking cocoa I use is 2g (ecc) per tablespoon. And Splenda is 1g per packet.

So if I was to use 1 cup of peanut butter, 1 cup of cream cheese, 1/4 cup of butter, 3tbs of cocoa and 3 packets of splenda mixed with some stevia, the total recipe would be about 40g. That would probably make around 20 small balls of fudge, at 2g each.

But again, this is a very simple recipe. Start out with small amounts. Like 2 tbs of peanut butter and cream cheese, 1/2 tbs of butter and then cocoa and splenda/stevia to get it to the right chocolate/sweetness for your tastes.