1. Preheat your oven to 390°F (200°C).

2. In a large bowl, combine the almond flour, corn flour, rice flour, sugar, and salt for the crust. Cut in the butter until the mixture resembles coarse crumbs.

3. Add the egg yolk and mix until the dough starts to come together, adding a little water if needed.

4. Roll the dough out into a round about 9.5 inches (24 cm) across and fit it gently into a pie dish. Trim any excess and prick the base with a fork.

5. Bake the crust for 10 minutes, then remove from the oven.

6. Beat the egg white and brush it lightly over the bottom and sides of the warm crust.

7. In a separate bowl, whisk together the sugar, eggs, cream, and vanilla for the filling until smooth.

8. Pour the filling into the crust and place in the oven.

9. Reduce the temperature to 345°F (175°C) and bake for 35 to 40 minutes, until the center is set and no longer jiggles.

10. Remove the pie from the oven and let it cool completely at room temperature.

11. Chill in the refrigerator for at least one hour before slicing and serving. Enjoy!