Preheat oven to 350. Spray 2 or 3 small baking dishes (I used 4" springform pans) with coconut oil spray.
In a medium microwave-safe bowl, melt the butter and chocolate - microwave in 15-20 second increments, stirring to check that the chocolate has melted and doesn't scorch. Once melted, allow to cool.
Add the rest of the wet ingredients to the bowl and mix with a hand mixer until combined. Set aside.
In a large bowl, combine all of the dry ingredients except for the chocolate chips. Whisk together until thoroughly combined
Add the dry ingredients to the wet ingredients in 2 batches - mix with the hand mixer on low until combined, then mix at high speed until fully mixed and no lumps are present. Taste for sweetness and chocolate flavor, and adjust with more sweetener/chocolate syrup or cocoa extract to taste.
Fold chocolate chips into the batter - the batter should be relatively stiff at this point, if it is not wait a couple of minutes for it to thicken up - the coconut flour will absorb water over time. If the batter is too thin the chocolate chips will sink to the bottom. If necessary, add another teaspoon of coconut flour.
Divide batter into the baking pans, and bake for 20-30 minutes. Test with a toothpick in the middle of each cake for doneness. When done cool for 10 minutes in the pan, then remove and allow to cool on a baking rack before frosting.