Line a mini muffin pan with paper cups.
Put both types of chips and the peanut butter in a microwave safe bowl.
Microwave for 1 minute, then stir.
Microwave again for about 30 seconds, stir, and repeat if necessary.
Pour the melted mixture into a large squeeze bottle.
Fill up the paper cups with the mixture.
Tap the pan on the counter to flatten out the tops.
Add sprinkles or drizzle with chocolate if desired.
Place in the fridge or freezer for a few minutes to harden.
