Watermelon Jelly Slice with Blueberries
A stunning no-bake dessert that transforms a watermelon rind into an edible serving vessel filled with vibrant watermelon-flavored jelly. This showstopping treat combines the natural sweetness of watermelon jelly with bursts of fresh blueberries or chocolate chips layered throughout. The result is a refreshing, jiggly dessert with surprising texture contrasts and a wow-factor presentation perfect for summer gatherings. The technique of setting jelly in stages suspends fruit or chips throughout rather than letting them sink, creating visual interest with every slice. Ideal for anyone seeking an impressive yet simple dessert that requires minimal baking skills. Serve chilled at parties, picnics, or family dinners when you want something fun and unexpected.
Ingredients
- ½ mini seedless watermelon
- 1 x 85 g packet Aeroplane Original Watermelon Flavour Jellyany watermelon or red jelly1:1jelly
same hydration and set time
- 2 tsp gelatin
- ½ cup (85 g) blueberries or chocolate chips
Instructions
- 1
Scoop out and remove watermelon flesh from half a mini seedless watermelon using a large spoon, setting flesh aside for another use. Remove all pink flesh, leaving white and green outer rind intact.
- 2
Place the watermelon shell in an appropriately sized bowl to stabilize and secure it.
- 3
Combine watermelon jelly crystals and gelatin in a jug or large bowl and mix with a fork until combined.
- 4
Pour boiling water over and stir continuously until all crystals and gelatin are dissolved.
- 5
Pour jelly mixture into the watermelon shell all the way to the rim, ensuring the shell is level.
- 6
Allow jelly to cool completely then drop one-third of blueberries or chocolate chips into jelly randomly.
- 7
Refrigerate for 10 minutes, then add another third of fruit or chips and refrigerate for 10 minutes again.
- 8
Add remaining fruit or chips and refrigerate for 4 hours or overnight until fully set.
- 9
To serve, slice the watermelon jelly into wedges using a sharp knife.
Tips
Stagger adding fruit or chips in three stages with 10-minute intervals during the setting process. This prevents them from sinking to the bottom and distributes them throughout each slice for visual appeal and even texture.
Ensure your watermelon shell is completely level before pouring jelly. Tilt the bowl gently to achieve an even surface; an uneven shell results in uneven jelly depth and awkward slices.
Use a sharp knife and slice with a gentle sawing motion rather than pushing down forcefully. A dull knife damages the jelly structure and crushes fruit inside.
Good to Know
Refrigerate in the watermelon shell, covered, for up to 3 days. Jelly may weep slightly as it ages.
Prepare completely through the overnight set. Slice just before serving for best presentation.
Serve cold, straight from the fridge. Pairs with whipped cream, ice cream, or fresh mint.
Common Mistakes
Do not skip the cooling step before adding fruit; adding fruit to warm jelly causes it to sink immediately rather than suspend throughout.
Do not overfill the jelly to the rim if your watermelon shell tilts slightly; excess jelly will overflow when unmolding.
Do not use a dull knife to slice; it crushes the delicate jelly structure and creates uneven, messy wedges.
Substitutions
same hydration and set time
FAQ
Can I use a regular full-sized watermelon instead of a mini?
Yes, but you will need to scale up all jelly and gelatin proportionally. A standard watermelon holds roughly 4-5 cups of liquid versus the mini's estimated 2-2.5 cups. Increase jelly packets and gelatin accordingly and extend setting time to 6-8 hours.
What if I don't have Aeroplane watermelon jelly?
Substitute any watermelon or red jelly brand using the same packet weight. Alternatively, make jelly from scratch using watermelon juice, gelatin, and sugar. The flavor profile changes slightly but the technique remains identical.
Can I freeze the watermelon jelly slice?
Freezing is not recommended as jelly becomes mushy and grainy when thawed. The fruit also loses texture. Keep refrigerated only. Once set, the jelly maintains quality for 2-3 days before moisture loss and slight degradation occur.