Blueberry Muffins
["1/2 c. butter", "1 c. sugar", "2 eggs", "2 c. flour", "2 tsp. baking powder", "1/4 tsp. salt", "1/4 c. milk", "1 tsp. vanilla", "1 1/2 c. blueberries"]
["Cream butter and sugar.", "Add eggs.", "Mix in flour, baking powder and salt.", "Add and mix milk and vanilla.", "Fold in blueberries.", "Bake at 375\u00b0 for 25 minutes.", "Makes 16 to 18 muffins."]
["butter", "sugar", "eggs", "flour", "baking powder", "salt", "milk", "vanilla", "blueberries"]