Whisk protein powder, oat flour, egg, baking powder, and ¼ cup almond milk in a medium-size bowl. Add almond milk two tablespoons at a time until you have a smooth, slightly running pancake batter.
Heat a skillet or pancake griddle to medium and add cooking spray to the pan. Make pancakes by adding ¼ cup of the batter per pancake to the skillet, leaving room between them so that the pancakes don't touch each other when they spread out. Cook for 1-3 minutes before flipping the pancake over. Pancakes are ready to flip as soon as you can slide the spatula underneath. They will not bubble.
Serve with berries, syrup, nut butter, or whatever you like!
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Notes
*Liquid will vary depending on brands of protein powder used, see instructions in the post and in this recipe card for more. * Nutrition facts are without toppings.