Preheat the oven to 200℃ (400°F.) Lightly grease the pan with butter. Combine the cornmeal, flour, sugar, baking powder, and cinnamon powder in a bowl. In a separate bowl, combine the applesauce, egg whites, and buttermilk.
Add the powdered ingredients to the wet ingredients and mix until just combined. (Don't completely mix!) Pour the batter into the pan and bake for 25 minutes in the oven. When a skewer poked into the center comes out clean, it's done. Divide into 12 portions and optionally top with honey + butter, or maple syrup + butter.
If you can't get a hold of applesauce, you can puree apples for similar results.
This recipe uses American cups, so 1 cup = 250 ml. If you don't have buttermilk, add 1 tablespoon of lemon juice to 1 cup of milk and let sit for 5 minutes before using.