This is my absolute favorite waffle recipe. It comes from Alton Brown from the food network.
1 cup all purpose flour
1 cup whole wheat flour
½ teaspoon baking soda
1 teaspoon baking powder
1 teaspoon salt
3 tablespoons sugar
3 eggs, beaten
2 ounces unsalted butter, melted
16 ounces buttermilk
Non-stick cooking spray, for waffle iron
Preheat a waffle iron.
In a large bowl, combine the all purpose flour, whole wheat flour, baking soda, baking powder, salt and sugar.
In a smaller bowl, whisk together the eggs and butter. Pour in the buttermilk, whisk to combine. Pour this onto the flour mixture. Stir to combine. Let rest 5 minutes.
Ladle onto the waffle iron and cook until golden brown. Best if served right away. They can also be kept warm in a 200°F oven, but they will not stay crispy.