How to Make It
Preheat oven to 335°. Grease and line a 9-inch loose-bottom cake pan with parchment paper.
Cream the butter and sugar until light and fluffy using either an electric mixer or wooden spoon. Stir in the vanilla and lemon zest. Add eggs one at a time, beating well between each addition. Add dried coconut and sift over brown rice flour, potato starch and baking power. Stir until just combined before adding coconut milk and folding in 1 cup of the blueberries.
Spoon the mixture into the prepared pan, sprinkle the top with the remaining 1/2 cup of berries and flaked coconut. Bake for 60 to 70 minutes, or until a toothpick inserted into the center comes out clean. Cool in pan. Sprinkle with a little powdered sugar or coconut flour and serve with natural yogurt or softly whipped cream.