Steps:

Rinse and pat dry the strawberries, remove the stems. Cut them into quarters. Slice bananas into ½-inch thick slices.

(Skip this step if you have a very powerful blendeLine a baking sheet with parchment paper, arrange strawberries and banana pieces flat on the tray in a single layer, preferably with some distance between each piece (for easy removal), and freeze overnight till solid.

When frozen (at least 6 hours), place the frozen banana slices and strawberries pieces in a food processor or blender.(if the slices stick together, break them apart by hand first, so the processor could run. Always be careful not to overfill the processor, as it might not work properly.

Drizzle with sweetened condensed milk, cream, and process till a thick creamy paste is formed, around 2-4 minutes. Scrape down the processor sides with a spatula as needed. (If using a blender like a Blendtec, use the tamper to constantly stir and press down the slices. Do this recipe in 2-3 rounds so as not to overwork the blender. Gradually increase the blending speed, but try to keep the blending within 2 minutes, also to protect the blender. I have tried both methods, but I prefer the food processor)

Freeze for another 4 hours. Serve immediately, or scoop into a closed container and freeze.