In the bowl of your mixer fitted with the paddle attachment, mix the banana on medium until mashed and smooth (approximately 1 minute).
Slowly add in yogurt and milk. Continue mixing until blended. Add the cereal and stir by hand to avoid crushing it.
Pour into popsicle molds. Freeze 8 hours until solid.
Notes
Use any combination of flavored milk and cereal. Chocolate milk with Cocoa Puffs or Captain Crunch, white milk with Cheerios, strawberry with Fruit Loops— the possibilities are endless!
Yield will vary according to size of popsicle molds.