Fill the steamer with water and bring to a boil while preparing the batter.
1 1/4 cup bisquick flour
1 cup evaporated milk
1/2 cup sugar
1 tsp vanilla
American Cheese for topping
Steam for about 5-7 minutes or until a toothpick inserted comes out clean.
Remove the cover and top each puto with cheese..Cover and steam for another 45 seconds to 1 minute only.