Arrange watermelon in a single layer on a sheet pan.
12 cups watermelon
Whisk together tequila, orange liqueur, lime juice, sugar, and mint leaves until sugar is fully dissolved.
2 cups agave tequila, ¼ cup orange liqueur, 1 lime, 2 tablespoons sugar, 10 mint leaves
Pour liquid mixture over watermelon.
Transfer pan to refrigerate and chill for at least one hour up to overnight (the longer the better). Serve cold.
Notes
Can I make this ahead of time? Absolutely. This is a spiked summer fruit dish that gets better with time. Make it up to one day in advance and keep it in the fridge.How to store tequila watermelon? Keep it in an airtight container and refrigerate. It should keep for up to three days.