Lightly spray your silicon molds with cooking spray.
Fill each space with greek yogurt.
Fill all the way to the top.
Place your desired fruit on top.
If you want to use banana, I would recommend using banana chips as I did here.
Freeze until completely frozen.
Remove from your molds and keep in the freezer. I am keeping mine in ziploc bags.
These are good for 3-4 weeks.