I did use a single serve blender, but you could easily just mash the banana. Combine plain (not fat free or greek) yogurt*, ripe banana (brown and yellow on the outside and soft), and cinnamon. I made popsicles and poured the rest into ice cube trays. Then about 5 hours before serving, I placed ice cubes in a bowl (I didn’t cover) and placed in the fridge, then just mashed with a spoon before eating.
*This was conventional dairy yogurt because I get it for free on WIC. I don’t like bananas, yogurt, or the idea of eating animal products, so I didn’t even taste this. But all 4 kids loved it!
I am happy to get measurements next time I make this–I believe it was 1:1 banana:yogurt, plus about 2 teaspoons of cinnamon per cup.