Prepare your molds by lining a small baking sheet with two 12-count mini silicone muffin molds.
In a high-powered food processor, combine the coconut oil, shredded coconut, salt, and stevia. Process on high for 5-8 minutes, scraping down the sides as needed, until a smooth, liquid coconut butter forms.
Once smooth, remove and set aside ¼ cup of the coconut mixture. This will be your topping.
To the food processor, add the remaining : pumpkin puree, cinnamon, ginger, vanilla, cloves, and optional collagen. Pulse until the mixture is completely smooth and creamy. If your pumpkin puree is cold, the coconut oil may solidify; simply continue processing until it becomes smooth again.
Divide the pumpkin mixture evenly among the 24 mini muffin cups. Use the back of a spoon or your fingertips to press it into a flat, compact layer.
Carefully spoon the reserved white coconut mixture on top of the pumpkin layer in each cup.
Place the baking sheet in the freezer for at least 1 hour, or until the fat bombs are completely firm.
Once solid, pop the fat bombs out of the molds.
Serve immediately or store in the freezer.