Preheat the oven to 250 degrees F. Place a large baking sheet in the oven.
Combine the flours, sugar, baking powder, pumpkin pie spice, baking soda, and salt in a large bowl; stir to mix well and set aside.
Combine the buttermilk, pumpkin, egg, oil, and vanilla in a medium bowl; whisk until smooth. Add the buttermilk mixture and 1/3 cup water to the flour mixture; stir until a moist batter forms.
Beat egg whites in a medium-size bowl with an electric mixer on high until stiff peaks form. Gently fold whites into batter.
Coat a waffle iron with cooking spray and preheat. Spoon about 1/3 cup of batter for each 4-inch waffle onto the hot waffle iron, spreading the batter to the edges. Cook for 3 to 4 minutes or until the steaming stops. Transfer waffles to baking sheet in oven to keep warm. Repeat procedure to make 16 waffles. Serve with Cranberry Honey.
Bring the honey and cranberry juice to a boil over medium heat in a medium saucepan. Add 3/4 cup of the cranberries and cook 5 minutes or until cranberries pop. Stir in the remaining 1/4 cup cranberries. Remove from heat and let stand 5 minutes before serving. Makes about 1 cup.