Step 1: Prepare Watermelon Puree - Start by cubing a chilled, ripe seedless watermelon, blend until smooth, and sweeten with sugar and lemon juice.

Step 2: Bloom Gelatin - Sprinkle gelatin over cold water and let sit for 5-10 minutes.

Step 3: Dissolve Gelatin - Warm the watermelon puree and stir in bloomed gelatin until dissolved.

Step 4: Chill Mixture - Cover watermelon mixture and refrigerate for 2-3 hours until thickened.

Step 5: Whip Cream - Chill mixing bowl, whip cream until soft peaks form, then add sugar and vanilla.

Step 6: Combine - Whisk chilled watermelon mixture, then gently fold in whipped cream.

Step 7: Assemble Cups - Spoon mixture into cups and refrigerate for at least 2-3 hours.

Step 8: Garnish and Serve - Garnish with mint, watermelon wedges, or additional whipped cream before serving.