In a bowl, combine flour, cornstarch, baking powder, soda, & salt.
Add milk, oil, egg, sugar, vanilla, and butter flavoring & mix well.
LET BATTER SET FOR 30 MINUTES. (LONGER IS OK)
Preheat waffle iron. DO NOT use non-stick spray. Follow the directions on your waffle iron to cook the waffles.
Serve immediately with choices of melted butter, syrup, fruit topping, and top with whipped cream and a sprinkling of cinnamon. If using fresh strawberries, wash, dry, hull, and slice. Place strawberries in a bowl and sprinkle with powdered sugar.