Preheat your waffle iron. Set it to medium or medium-high. Lightly grease with nonstick spray or a small amount of butter/oil.
Blend the batter. In a blender, add cottage cheese, eggs, oats (or oat flour), milk, maple syrup or honey, vanilla, baking powder, cinnamon, and salt.
Blend until smooth, 20–30 seconds. The batter should be pourable but not runny.
Adjust consistency. If the batter seems too thick, add 1–2 teaspoons more milk. If too thin, pulse in a bit more oats.
Fold in extras. If using chocolate chips, blueberries, or protein powder, stir them in gently after blending.
Avoid overmixing.
Cook the waffles. Pour batter into the preheated waffle iron, just enough to cover the grid without overflowing. Cook until golden and crisp, usually 3–5 minutes depending on your machine.
Repeat and keep warm. Transfer finished waffles to a wire rack or a 200°F (95°C) oven to stay crisp while you cook the rest.
Serve with toppings. Add Greek yogurt and berries for extra protein, or go classic with a drizzle of maple syrup. Enjoy warm.