01 - Line a standard 12-cup muffin tin with paper liners.
02 - Combine chocolate and coconut oil in a heatproof bowl. Melt gently over a double boiler or in 30-second microwave bursts, stirring until smooth.
03 - Spoon about 1 teaspoon of melted chocolate into each liner, tilting to coat the bottom evenly.
04 - Place the muffin tin in the freezer for 10 minutes until the chocolate is completely set.
05 - While chocolate chills, mix peanut butter, powdered sugar, softened butter, vanilla, and salt in a bowl until smooth and thick.
06 - Roll the peanut butter mixture into 12 small discs and place one on top of each chocolate layer, pressing gently to flatten slightly.
07 - Spoon the remaining melted chocolate evenly over the peanut butter discs, covering them completely.
08 - Tap the tin gently against the counter to level the tops. Refrigerate for 30 minutes or until fully set.
09 - Peel off liners and serve chilled or at room temperature.