In a mixing bowl combine flours, sugar, baking powder, and salt. Stir in milk and oil. In another bowl, beat egg whites until stiff (tips stand straight). Fold egg whites into flour mixture.
Spray a griddle with nonstick spray coating. Preheat griddle over medium heat. For each pancake pour about 1/4 cup batter onto the hot griddle. Cook over medium heat until pancakes are golden brown (1 to 2 minutes per side); turn to second sides when pancakes have bubbly surfaces and slightly dry edges.
Meanwhile, in a blender container or food processor bowl combine fresh or thawed frozen unsweetened strawberries, sugar, and vanilla. Cover and blend or process until smooth. In a small saucepan, heat sauce until warm. Serve over pancakes. Serve pancakes with sauce. Makes 5 servings (2 pancakes each).