This recipe blogger had me at "no fake sugar." The recipe comes from Chocolate Covered Katie, and you can get this recipe and others by clicking the link.
Sugar Free Chocolate Fudge1/2 cup coconut butter or Homemade Coconut Butter. (120g)
1 large, overripe banana (160g) (For a banana-free version, just use 2/3 cup more coconut butter)
1/2 tsp cinnamon (optional)
scant 1/8 tsp salt
pinch uncut stevia (or 2 tbsp powdered sugar or pure maple syrup or honey)
1/4 cup cocoa powder or cacao powder (20g)
optional: 1/2 tsp pure vanilla extract
Make sure your coconut butter is melted before use. Combine all ingredients in a food processor. Then smooth the fudge into a container or candy molds. (Plastic containers work well, because you can pop the fudge right out.) Place in the fridge for a few hours, or freeze for a few minutes. You can freeze it for longer periods of time; just be sure to thaw at least 15-20 minutes prior to eating.