Preheat oven to 350° F. Line a 9in round baking pan with parchment paper. In a mixing bowl combine the egg, sugar and coconut oil. Add remainder of ingredients except blueberries and mix thoroughly. Gently fold in blueberries, use hands if needed. Press batter in prepared pan. Sprinkle some grated lemon rind over top (optional). Bake about 30 minutes and cool for at least 15minutes. Cut into 8 pieces. ENJOY!!!!