Blueberry Muffins
["1/2 c. butter", "1 c. sugar", "2 eggs", "2 c. flour", "2 tsp. baking powder", "1/2 tsp. salt", "1/2 c. milk", "1 tsp. vanilla", "1/2 c. blueberries, mashed", "2 c. whole blueberries"]
["Cream butter and sugar.", "Add eggs.", "Sift and add flour, baking powder and salt.", "Add milk and vanilla.", "Add mashed blueberries, then fold in additional blueberries.", "Grease a 12 muffin tin. Divide batter into tin.", "Sprinkle tops with additional sugar, if desired.", "Bake at 375\u00b0 for 25 to 30 minutes."]
["butter", "sugar", "eggs", "flour", "baking powder", "salt", "milk", "vanilla", "blueberries", "blueberries"]