Preheat oven to 200°. In a medium bowl, whisk yolks. Whisk in honey, 2 tbsp. oil, buttermilk, and vanilla. In a separate bowl, whisk together flours, baking soda, salt, and baking powder. Whisk into wet ingredients until just combined. Stir in oats.
Heat remaining 1 tbsp. oil in a large nonstick frying pan over medium heat. Meanwhile, in a separate bowl, beat egg whites with a whisk or electric mixer until stiff peaks form. Fold into batter.
Swirl oil to coat pan; pour excess into a heatproof cup. Ladle batter into pan in 1/3-cup portions and cook until bubbles form and edges look dry, 3 to 5 minutes. Flip pancakes and cook until browned, 3 minutes more. Keep warm on a baking sheet in oven as you cook. Serve with warm Raspberry Honey or maple syrup.
*Available at most Whole Foods Markets.
Note: Nutritional analysis is per pancake, with 1 tbsp. Raspberry Honey.