I substituted the plain yoghurt with greek yogurt to give it a boost of protein. Instead of using Splenda I used Stevia (some might also use Xylitol).
Sugar-Free Strawberry Frozen Yogurt
Create instant frozen yogurt for a healthy dessert in just 10 minutes by blending frozen strawberries with yogurt in a food processor. This healthy frozen yogurt recipe is sweetened with Splenda, making it a sugar-free treat. Use a different favorite frozen fruit in place of the strawberries if you like.