Pumpkin Walnut Belgian Waffles

Name: Pumpkin Walnut Belgian Waffles
Ingredients: 1/2 cup Bob's whole wheat pastry flour; 1/2 cup all purpose flour; 1 tablespoon cultured buttermilk blend powder; 1/4 teaspoon baking soda; 1 teaspoon baking powder; 1/2 teaspoon salt; 1/2 teaspoon pumpkin pie spice; seeds of one cardamom pod, crushed; 3/4 cup canned pumpkin; 1/4 cup organic raw sugar; 3 tablespoons vegetable oil; 2 eggs; 1/4 cup toasted walnuts, finely chopped; vanilla ice cream, one scoop per Belgian waffle quarter; organic agave nectar, for drizzling