Stuffed Muffins
["1 c. flour", "2 Tbsp. sugar", "1 1/2 tsp. baking powder", "1/2 tsp. salt", "1 egg, beaten before adding", "1/2 c. milk", "2 Tbsp. salad oil"]
["Beat 15 strokes.", "No more!", "Spray muffin tins with nonstick coating.", "Add 1/2 butter, then drop teaspoonful of favorite preserves, jelly or apples slices.", "Spoon on remaining batter. Bake at 350\u00b0 for 12 minutes."]
["flour", "sugar", "baking powder", "salt", "egg", "milk", "salad oil"]