Place watermelon, sweetener, and lime or lemon juice into a high-powered blender and blend until you have a smooth mixture. Taste and ensure it’s sweet enough, or add more sweetener.
Stir in black pepper if using
Pour into popsicle molds and freeze for 4-6 hours or overnight.
Watermelon Popsicle Recipe Variations
Mint Watermelon Popsicles. Mince 2 tablespoons of mint leaves and stir in after the watermelon has been liquefied.
Spicy Watermelon Popsicles. Add a few teaspoons or up to a tablespoon of Taijin for a spicy, sweet, tart finish.
Strawberry Watermelon Popsicles. Add 2 cups of strawberries to the watermelon and blend.
Coconut Watermelon Popsicles. Add 1/3 cup of full-fat coconut milk to the watermelon during blending.
Watermelon Yogurt Popsicles. Add 1.5 cups of Greek yogurt to the watermelon before blending.