Begin by selecting a ripe watermelon that feels heavy for its size. Cut the watermelon in half and scoop out the flesh, discarding any seeds. Place the watermelon in a blender or food processor and blend on high until smooth and silky, resembling a puree.

If you'd like to enhance the flavor of your watermelon fruit roll-ups, now is the time to mix in additional fruits or flavorings. Consider adding chopped strawberries or mangoes for a fruity twist. A splash of lemon juice will brighten the sweetness while balancing the flavors. Blend the mixture again briefly to incorporate all elements evenly, ensuring a vibrant taste.

Line a baking sheet or a dehydrator tray with parchment paper to prevent sticking. Pour the watermelon mixture onto the lined surface and use a spatula to spread it into an even layer, about 1/8 inch thick.

For the drying process, you can choose between an oven or a dehydrator. If using an oven, preheat it to a low temperature of about 140°F (60°C). Bake for approximately 8 hours, checking occasionally until the roll-up is fully dried but still pliable. If using a dehydrator, set it to low and monitor it until you achieve your desired texture.

Once the watermelon fruit roll-ups are dried, remove them from the oven or dehydrator, allowing them to cool completely on the sheet. Using kitchen scissors or a sharp knife, cut the roll-ups into strips or squares, as desired. Store your Gourmet Watermelon Fruit Roll-Ups in an airtight container at room temperature, or if you prefer, refrigerate them for up to a week or freeze them for longer preservation.