1
: Preheat oven to 400ºF (200ºC). Grease a 12 cup muffin pan or line with paper liners.
2
: Combine flour, cornmeal, baking powder and salt in a large bowl. Add next 4 ingredients. Stir just until combined. Add frozen blueberries. Stir lightly until blueberries are combined in batter. Spoon batter into prepared muffin pan and sprinkle with coarse sugar.
3
: Bake in preheated oven 18-20 minutes or until a toothpick inserted in centre comes out clean.