Mix the dry: In a bowl, whisk protein powder, oats/oat flour, baking powder, cinnamon, and salt until no lumps remain.
Add the wet: Stir in almond milk, egg whites, vanilla, and sweetener if using. The batter should be thick but pourable.
If it’s too thick, add 1 tablespoon milk at a time.
Rest the batter: Let it sit for 3–5 minutes. This helps the oats hydrate and the baking powder activate for a fluffier stack.
Heat the pan: Warm a nonstick skillet over medium heat. Lightly coat with spray or oil.
Cook the pancakes: Pour 1/4-cup portions of batter onto the skillet. Cook 2–3 minutes, until bubbles form and edges look set, then flip and cook 1–2 minutes more.
Serve: Stack warm and add your favorite toppings.
For a low-calorie option, try berries and a spoonful of Greek yogurt.