Line a small tray or plate with parchment paper.
In a medium bowl, combine almond flour, chocolate protein powder, and cocoa powder.
Add the nut butter, maple syrup, and vanilla extract. Stir until combined.
Add milk one tablespoon at a time until the dough becomes soft, smooth, and easy to roll.
Roll into 8–10 evenly sized Healthy Cosmic Brownie Protein Balls and place them on the prepared tray.
In a microwave-safe bowl, combine chocolate chips and coconut oil. Microwave for 20–30 seconds, stir, and repeat until completely smooth.
Dip each protein ball into the melted chocolate, allowing excess chocolate to drip off.
Sprinkle with rainbow candy sprinkles while the chocolate is still wet.
Freeze for 20–30 minutes until the coating is firm.
Enjoy immediately or store for later.