If you bought a giant watermelon and your eyes were bigger than your stomach, freeze it. Chunk it up, lay the pieces on a baking sheet, and freeze them solid. Then transfer them to a freezer bag.
Frozen watermelon lasts 10 to 12 months in the freezer. That’s basically forever in fruit years. You can use them in smoothies, cocktails, or as edible ice cubes. Just don’t expect a thawed watermelon to be crunchy—it’ll be more like a watermelon sorbet situation. Which, let’s be honest, is still pretty great.
One warning: Frozen watermelon does not make a good snack on its own unless you enjoy jaw-breaking, tongue-numbing pain. Blend it or let it thaw a little. Your teeth will send you a thank-you note.