1 3/4 c. flour
2/3 c. sugar
1 tbsp. baking powder
1/2 tsp. salt
6 tbsp. butter, softened
1 egg
1/2 c. milk
1 tsp. grated lemon rind
1/2 tsp. vanilla
1 c. blueberries

Mix all ingredients together, adding blueberries last. Bake at 400 degrees for 20-25 minutes. Yields 15-18 muffins.