- Heat waffle iron on high setting until very hot.
- Whisk flour, sugar, baking powder, baking soda, and kosher salt in a large bowl; set aside.
- Using an electric mixer, beat egg whites in a medium bowl until medium-soft peaks form; set aside.
- Whisk egg yolks, melted butter, buttermilk, and soda water in a medium bowl; gradually whisk into dry ingredients.
- Fold in egg whites.
- Coat waffle iron with non-stick vegetable oil spray.
- Pour batter onto iron, spreading it evenly and making sure to coat the corners (amount of batter needed will vary according to machine).
- Scatter 1 tablespoon ham and 1 tablespoon cheese over each waffle.
- Cook until golden brown and cooked through, repeat until all the batter is used.
- Serve with butter and warm maple syrup
Makes 4-6 servings.
Approximate Nutrient Analysis per serving (based on 6 servings and not including maple syrup):
600 calories, 45 g fat, 24 g saturated fat, 200 mg cholesterol, 1400 mg sodium, 33 g carbohydrate, 1 g fiber, 4 g sugar, 16 g protein