For starters, I used a vanilla non-fat Greek yogurt. Use about a cup and a half to two cups and spread it evenly on a wax paper lined cookie sheet. I was a bit worried that the yogurt would stick to the wax paper. Luckily, it did not. Since then, I purchased these silpat baking mats. I will give these a try next time I make the recipe. If you have a different kind of yogurt, feel free to use that too. 

The toppings you add are completely up to you! For this, I used fresh strawberries that I sliced thin and frozen blueberries. Walnuts were a great addition to this as well. The video I saw used chocolate sauce as a topping, but I went with honey instead. 

Once you are happy with your choice of toppings, place the cookie sheet in the freezer for 2-3 hours or until it is fully frozen. Then cut and enjoy!