This frozen watermelon lemonade is a bright, icy, and refreshing blender drink made with sweet frozen watermelon, fresh lemon juice, and just enough sweetness. It is ready in minutes and perfect for hot summer days, poolside afternoons, and backyard gatherings.
Cut the watermelon into small cubes and remove any seeds. Arrange the cubes in a single layer on a baking sheet and freeze for at least 2–3 hours, or until completely firm.
Add the Ingredients
Add the frozen watermelon, fresh lemon juice, cold water, honey or sugar, and ice cubes to a high-speed blender.
Blend Until Smooth
Blend on high speed, stopping to scrape down the sides as needed, until the mixture becomes thick, smooth, and slushy.
Adjust the Flavor
Taste the lemonade and add more honey for sweetness or additional lemon juice for a brighter, tangier flavor. Blend again briefly.
Serve Immediately
Pour the frozen watermelon lemonade into chilled glasses. Garnish with fresh mint, lemon slices, and small watermelon wedges if desired. Serve immediately for the best icy texture.
Notes
Best Watermelon: Use ripe, naturally sweet seedless watermelon for the strongest flavor and the least amount of added sweetener.
Freeze Ahead: Keep frozen watermelon cubes in a freezer bag so this refreshing drink can be blended anytime.
Adjust the Texture: Add a splash of water for a thinner drink or extra frozen watermelon for a thicker slushy consistency.
Sweetener Options: Honey, maple syrup, agave, or granulated sugar all work well depending on your preferred flavor.
Serve Fresh: Frozen watermelon lemonade is best enjoyed immediately because the icy texture gradually melts as it sits.