Step 1

Pulse biscuits in a food processor until crumbs. Add butter; pulse until just combined. Divide biscuit mixture into the bases of four 1½-cup (375ml) jars.

Step 2

Finely grate rind of lime then juice; you will need 2 tablespoons juice. Process rind and juice, cheeses and sifted icing sugar until smooth. Divide cheese mixture into jars; tap gently on a work surface to level mixture.

Step 3

Place raspberries and extra icing sugar in a bowl. Using the back of a fork, lightly crush the berries, stirring until sugar dissolves. Stir in watermelon.

Step 4

Divide watermelon mixture between jars; top with mint to serve.