Preheat your oven to 350°F (175°C) and line an 8-inch square baking dish with parchment paper.
In a mixing bowl, combine almond flour, Monkfruit sweetener, salt, and melted butter for the crust. Stir until fully combined, then press the mixture into the lined baking dish.
Bake the crust for 10-12 minutes, until golden brown.
In a separate mixing bowl, whisk together the lemon juice, Monkfruit, eggs, coconut flour, baking powder, and salt for the filling.
Pour the filling over the crust, then return to the oven and bake for another 20-25 minutes, or until the filling has set.
Let cool, then slice into squares and serve!