01 -
Process biscoff cookies in a food processor until very finely ground. Add almond meal and pulse until combined. With processor running, slowly add melted butter. Scrape sides of work bowl. With processor running again, add melted chocolate and continue mixing until fully combined.
02 -
Brush a 10-inch pie plate lightly with oil or spray with non-stick baking spray. Press cookie crumb mixture into the bottom and up the sides of the pie plate. Freeze while preparing the filling.
03 -
Reserve 3 tablespoons watermelon juice in a small bowl. Add remaining juice along with sugar and salt to a small pot. Bring to a simmer over medium heat. Simmer for 5 minutes then remove from heat.
04 -
In a large bowl, whisk together condensed milk, lime juice, and eggs. Slowly whisk 1 cup of hot watermelon juice into milk mixture until fully combined. Transfer milk mixture into the pot and whisk until fully combined.
05 -
Return pot to medium heat and cook, whisking frequently, for 5 minutes. Whisk cornstarch into reserved watermelon juice until fully dissolved, then whisk into the pot. Continue cooking, whisking constantly until mixture bubbles and thickens to pudding consistency, about 5 more minutes.
06 -
Pour filling into prepared pie crust. Let cool at room temperature for 30 minutes, then refrigerate, uncovered, for 6 hours or overnight.
07 -
Top with sweetened whipped cream and lime zest before serving.