Place strawberries in a bowl or measuring cup. If your strawberries are not very sweet, sprinkle with sugar and toss to combine. Place the bowl in the microwave at 30-second intervals until the strawberries soften slightly and the sugar dissolves in the juice (if used).
Add bananas and strawberry mixture to the blender and blend until they reach the perfect consistency.
When your ice cream stops moving in the blender, you will want to stop and scrape down the pitcher of the blender and stir a few times, about 2-3 minutes of total blending time.
Your frozen fruit may separate into tiny frozen chunks before it becomes a fabulous creamy consistency, so be patient.
Serve and enjoy! You can also transfer to a freezer-safe container and allow ice cream to firm up in the freezer for 2 to 3 hours.
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Notes
If you do not have a high powdered blender you may want to cut your bananas into slices and freeze them.
There are no preservatives in your ice cream, so it will freeze solid. Simply remove from the freezer 10 minutes before serving to allow to soften slightly. It freezes and keeps beautifully!