In a microwave safe bowl, melt 2 tbs of coconut oil. In a separate medium bowl, mix together your peanut butter, melted coconut oil, sweetener, and vanilla extract until smooth and set aside.
Scoop a heaping 1 tsp of the chocolate layer into each muffin cup. Repeat until you’ve filled your cups. Then, pick up the entire muffin tin and shake and tap until the layer is set evenly.
Repeat the same thing with the peanut butter layer, plopping around 1 tsp on top of the chocolate layer. Pick up the entire muffin tin one last time and shake and tap until your cups are even. Top with remaining chocolate.