In a microwave-safe bowl or on the stovetop, melt the coconut oil and peanut butter together until smooth. If using the microwave, heat in 20-second intervals, stirring in between.
Once melted, stir in the unsweetened cocoa powder, vanilla extract, stevia extract, and a pinch of salt. Mix well until all ingredients are fully combined.
Taste the mixture and adjust the sweetness and saltiness to your preference by adding more stevia or salt if needed.
Using a silicone mold, spoon the mixture into each mold cavity, filling them about 3/4 of the way full. Smooth the tops using the back of a spoon or a small spatula.
Place the filled mold in the freezer for about 15-20 minutes, or until the fat bombs are firm and set.
While the fat bombs are chilling, melt the dark chocolate for the coating. You can do this in the microwave or on the stovetop using gentle heat.
Once the fat bombs are firm, gently pop them out of the mold.
Dip each fat bomb into the melted dark chocolate, coating it evenly. Place the coated fat bombs on a parchment-lined tray or plate.
Return the coated fat bombs to the freezer for another 10-15 minutes to allow the chocolate coating to harden.
Once the chocolate is set, transfer the fat bombs to an airtight container and store them in the refrigerator. Enjoy as needed to satisfy your cravings or as an energy-boosting snack!