Blueberry Muffins
["1 3/4 c. flour", "2/3 c. sugar", "1 Tbsp. baking powder", "6 tsp. butter or margarine", "1 egg", "1/2 c. milk", "1/2 tsp. vanilla", "1 c. frozen blueberries"]
["Mix flour, sugar and baking powder.", "Cut in butter until mixture is fine crumbs.", "Mix egg, milk and vanilla; stir into flour mixture.", "Fold in frozen blueberries.", "Bake at 400\u00b0 for 20 to 25 minutes.", "Yields 12 muffins."]
["flour", "sugar", "baking powder", "butter", "egg", "milk", "vanilla", "frozen blueberries"]