01 -
Grind the speculoos cookies in your food processor till they're super fine. Toss in the ground almonds and give it a few pulses. While the machine runs, slowly pour in your melted butter. Give the bowl a good scrape. Turn it back on and pour in the melted chocolate, letting it mix till everything's blended well.
02 -
Lightly oil a 10-inch pie dish or give it a quick spray. Press the cookie mix firmly into the bottom and up the sides. Pop it in the freezer while you work on the filling.
03 -
Set aside 3 tbsp of watermelon juice in a small cup. Pour the rest into a pot with the sugar and salt. Bring it to a gentle bubble over medium heat. Let it bubble for 5 minutes, then take it off the heat.
04 -
In a big bowl, mix together the condensed milk, lime juice, and eggs. Slowly pour in 1 cup of the hot watermelon juice while stirring. Then dump this mixture back into your pot and stir until everything's mixed well.
05 -
Put the pot back on medium heat and cook for 5 minutes, stirring often. Mix the cornstarch with your saved watermelon juice until it's completely dissolved, then pour it into the pot. Keep cooking and stirring non-stop until the mix bubbles up and gets as thick as pudding, about 5 more minutes.
06 -
Pour your filling into the frozen crust. Let it sit out and cool down for half an hour, then stick it in the fridge uncovered for at least 6 hours or overnight.
07 -
Add a layer of whipped cream and sprinkle fresh lime zest on top before you serve it.