Preheat oven to 375°F (190°C).
In a bowl, mix almond flour, coconut flour, and sugar.
Cut in cold butter until the mixture resembles coarse crumbs.
Add the egg and mix until dough forms.
Roll out dough on parchment paper into a rough circle.
In another bowl, mix berries, honey, cornstarch, and lemon juice.
Place berry mixture in the center of the dough, leaving a border.
Fold the edges of the dough over the berries.
Bake for 40 minutes or until the crust is golden and the berries are bubbly.
Let cool before serving.