2 cups flour
1/2 cup sugar
2 teaspoons baking powder
1/2 teaspoon salt
1 egg, beaten
3/4 cup milk
1 stick margarine, melted
1 cup fresh or frozen blueberries
1 teaspoon grated lemon peel (optional)

Preheat oven to 375. Grease 12 medium muffin cups or line with paper baking cups. Mix together the dry ingredients. Add combined egg, milk and margarine, mixing just until moistened. Fold in blueberries and lemon peel. Fill prepared muffins cups 3/4 full. Bake 20 to 25 minutes or until golden brown. Preparation time: 15 minutes. Cooking time: 25 minutes.