Line a muffin tin with paper liners.
Mix peanut butter, coconut oil, honey, protein powder, and vanilla extract until smooth.
Spoon half of the chocolate chips into a microwave-safe bowl and melt, stirring every 20 seconds.
Pour a small layer of melted chocolate into each liner.
Freeze for 5 minutes to set.
Add a layer of peanut butter mixture on top of the chocolate in each liner.
Top with remaining melted chocolate and smooth the tops.
Refrigerate or freeze for 10–15 minutes until firm.
Serve chilled and enjoy.