DD found the idea for this and we tried it today.
Cut up 2-3 ripe bananas into chunks, place in freezer bag, and freeze til firm. We left them over night. Take out of freezer for about 5 to 10 minutes to thaw slightly. Place in blender or food processor with 1/2 - 1 tsp vanilla extract. Blend til smooth. It should be the consistency of soft serve ice cream. Eat up. Tastes a lot like ice cream, but without the guilt. You can add in any other kind of frozen fruit. We froze some strawberries to mix with bananas tomorrow. I used to make chocolate covered frozen bananas when the kids were little, but this way you can add in other fruits.
We made homemade magic shell to drizzle on:
Place 1 1/4 cups chocolate chips and 1/2 cup coconut oil into microwave safe bowl. Heat til melted, and stir. Drizzle over banana soft serve (or ice cream). Store left over topping in refrigerator. To serve again, melt in microwave. When you pour it over frozen desserts, it becomes solid again.
DD likes the banana soft serve so much, I'm thinking about buying a Yonana frozen treat maker.