Ingredients

• 1 cup whole-wheat flour
• 1 cup all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon salt
• 1/4 teaspoon baking soda
• 2 cups nonfat buttermilk, (see Tip)
• 1 large egg, separated
• 1 tablespoon canola oil
• 1 tablespoon vanilla extract, (optional)
• 2 large egg whites
• 2 tablespoon sugar

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Cooking Directions

Step 1

Stir whole-wheat flour, all-purpose flour, baking powder, salt and baking soda in a large bowl. Whisk buttermilk, the egg yolk, oil and vanilla (if using) in a separate bowl. Add the wet ingredients to the dry ingredients and stir with a wooden spoon just until moistened.

Step 2

Beat the 3 egg whites in a grease-free mixing bowl with an electric mixer until soft peaks form. Add sugar and continue beating until stiff and glossy. Whisk one-quarter of the beaten egg whites into the batter. Fold in the remaining beaten egg whites with a rubber spatula.

Step 3

Preheat a waffle iron. Brush the surface lightly with oil. Fill the waffle iron two-thirds full of batter. Cook until the waffles are crisp and golden, 5 to 6 minutes. Repeat with the remaining batter, brushing the surface with oil before cooking each batch.