Preheat the oven to 350°F (175°C).
In a mixing bowl, combine all-purpose flour, almond flour, melted coconut oil, maple syrup, vanilla extract, and salt. Mix until a dough forms.
Press the dough into a tart pan, making sure to cover the bottom and sides evenly.
Bake the crust for 10-12 minutes or until lightly golden. Let it cool.
In a saucepan, combine blueberries, maple syrup, cornstarch, lemon juice, and lemon zest. Cook over medium heat until the mixture thickens, about 5-7 minutes.
Pour the blueberry filling into the cooled crust and spread it evenly.
Chill the tart in the refrigerator for at least 1 hour before serving.