Preheat the oven to 170C and lightly grease a 6-hole muffin tin.
Pulse the oat flour, Natvia and coconut oil to combine then divide into 6 and press across the bottom and up the sides of each. Bake for 5 minutes.
Beat together the ground almonds, flour, Natvia, egg, milk, coconut oil and almond extract.
Arrange 3-4 blueberries at the bottom of each base then spoon over some of the filling mixture to cover each one. Sprinkle with some flaked almonds then bake for 15 minutes until golden brown. Leave to cool, pop out of the tin and enjoy!