Preheat your waffle iron. Set it to medium or the manufacturer’s standard waffle setting. A hot iron is crucial for crisp edges.

Blend the dry base. Add oats, baking powder, salt, and cinnamon to a blender. Pulse until the oats turn into a fine flour.

Add the wet ingredients. To the blender, add cottage cheese, eggs, vanilla, 1 tablespoon oil or melted butter, and 2 tablespoons milk. If you’re using a sweetener, add it now.

Blend until smooth. Start on low, then increase to high for 20–30 seconds. The batter should pourable but not thin. If it’s too thick, add milk 1 tablespoon at a time.

Rest the batter (2–3 minutes). This lets the oats hydrate and the baking powder activate. You’ll get better rise and a softer interior.

Grease the waffle iron. Lightly brush or spray with oil to prevent sticking.

Cook the waffles. Pour in enough batter to just cover the grids. Close the lid and cook until golden and crisp, usually 3–5 minutes depending on your waffle iron.

Cool on a rack. Transfer finished waffles to a wire rack instead of stacking them. This keeps steam from softening the crust.

Repeat with remaining batter. Stir in mix-ins just before pouring if using (for example, sprinkle blueberries on the batter in the iron to avoid staining the whole batter purple).

Serve or store. Enjoy warm with your favorite toppings, or move on to storage for the week.