Preheat oven 375°F. (Add reserved flour to berries and toss to coat and set aside.) Combine 1 3/4 cups flour in bowl, add sugar baking powder, salt; mix well. Add egg, milk and melted butter. Mix but don't over mix, batter should not be smooth. Stir in blueberries fold in gently.
Line a 12 cup muffin tin with paper liners, spray with butter Pam. Divide equally, bake and enjoy.
Bake 20 to 25 minutes till toothpick comes out clean. Muffins will be light golden brown.