Whole Wheat Pancakes

1 1/2 c. buttermilk
1 1/2 c. whole wheat flour
2 Tbs. oil
2 tsp. vanilla
3 eggs, separated
1/2 tsp. salt
1 Tbs. baking powder

Combine buttermilk and egg yolks in bowl and beat until foamy. Add remaining ingredients...EXCEPT egg whites. Stir until smooth. Beat egg whites until stiff. Fold egg whites into batter. Cook at approx. 325* on griddle. Serve hot.