01 -
Heat the waffle iron until fully hot. Grease both plates well with nonstick spray or a light brush of oil.
02 -
Add the oat flour, protein powder, baking powder, cinnamon, salt, eggs, cottage cheese, Greek yogurt, milk, vanilla, and oil to a blender. Blend until smooth and thick but pourable.
03 -
Let the batter stand for 5 minutes so the oat flour and protein powder hydrate. If it becomes too thick to pour, blend or stir in 1 tablespoon of milk at a time.
04 -
Spoon batter into the center of the waffle iron, using enough to fill the grid without overflowing. Close the lid and cook for 4-6 minutes, until deeply golden and the steam slows.
05 -
Transfer each waffle to a wire rack while the rest cook. Do not stack them while hot, or the steam will soften the ridges.
06 -
Serve warm with berries, Greek yogurt, nut butter, or a light drizzle of maple syrup.