BLUEBERRY MUFFINS

2 cups flour
1/3 cup sugar
1 Tbsp. baking powder
1 tsp. salt
1 egg well beaten
 1 cup milk
1/4 cup melted butter or margarine
1 cup fresh or frozen blueberries
 1 Tbsp. sugar
1 tsp. lemon zest

1. In a large bowl, mix together the flour, sugar, baking powder, and sat. 
2. In another bowl mix the egg, milk, and butter or margarine.
3. Add the wet ingredients all at once to the dry ingredients and mix just until batter is moistened. Do not over-stir  Batter should be lumpy.
4. Fold in the blueberries.
5. spoon into greased medium sized muffin tins. Sprinkle with the additional sugar and lemon zest
6. Bake in 400F oven for 20 minutes or until toothpick inserted in the centre comes out clean.