Gather your ingredients listed above. Having everything ready will make the process smoother.
In a large mixing bowl, whisk together the all-purpose flour, cornstarch, kosher salt, baking soda, and baking powder.
In a separate bowl, combine the beaten egg, granulated sugar, softened butter, vegetable shortening, vanilla extract, low-fat milk, half-and-half, and buttermilk. Whisk until smooth.
Pour the wet mixture into the bowl with the dry ingredients. Gently fold together until just combined.
Preheat your waffle maker according to the manufacturer’s instructions, spraying it with nonstick cooking spray.
Pour the appropriate amount of batter onto the center of the waffle grid and cook until golden brown and crispy, about 4-5 minutes.
Carefully remove the waffles and serve immediately with your favorite toppings.