Combine all the filling ingredients in a pot while cold, then bring to a boil, stirring until the mixture thickens.

Prepare the topping: Sauté the ground tea biscuits or cookies in the ghee or butter over medium heat until golden, then let cool.

Spread half of the topping in a large baking dish, pour the filling over it, then cover with the remaining topping.

Bake in the oven for about 15 minutes, until set.

Let cool, then serve with simple syrup.