Pumpkin Nut Waffles

2 cups flour
1 Tbsp baking powder
0.75 tsp pumpkin pie spice
0.25 tsp salt
3 egg yolks
1.75 cups milk
0.5 cup oil
0.5 cup canned pumpkin
3 egg whites
0.5 cup chopped pecans

Thoroughly stir together flour, baking powder, pie spice and salt. Beat yolks; stir in milk, oil and pumpkin. Stir into dry ingredients. Beat egg whites to stiff peaks; fold into batter. Stir in nuts.