In a food processor, grind the wafers or Biscoff cookies. Add the melted coconut oil and mix well.
Transfer the crust mixture into a lined 9 inch (24 cm) round tart pan or rectangular pan. Press down firmly around the edges and bottom.
Put the crust in the freezer while preparing the filling.
In a medium saucepan, bring the coconut cream to a boil, stirring frequently.
Add the sugar, lemon juice, and vanilla extract. Continue stirring over low heat.
In a separate bowl, mix 4 tablespoons of corn or arrowroot starch with 1/4 cup coconut milk, ensuring no lumps.
Slowly add the starch mixture to the saucepan, stirring constantly to avoid lumps. Cook for 5-8 minutes until the custard thickens.
Remove the custard from the heat and pour it into the prepared crust. Spread evenly.
Place the tart in the fridge for at least 5 hours, or overnight, to set.
Once set, decorate the tart with sliced strawberries. Serve and enjoy!