Preheat oven to 350°F.
Combine Bisquick, 1/4 cup sugar, and 1 teaspoon cinnamon.
Add applesauce, milk, egg and oil, and beat vigorously for 30 seconds.
Fill greased muffin pans 2/3 full and bake 12-15 minutes.
Cool slightly and remove from pans.
Mix remaining sugar and cinnamon.
Dip tops of muffins in melted butter, then in sugar-cinnamon mixture.