Blend the base: Add cottage cheese, eggs, vanilla, and sweetener (if using) to a blender.
Blend until completely smooth and creamy, 20–30 seconds.
Add the dry ingredients: Add oats (or flour), baking powder, cinnamon, and salt. Blend again until just combined. If the batter seems very thick, add milk 1 tablespoon at a time.
You want it pourable but not runny.
Rest the batter: Let it sit for 5 minutes. Oats hydrate, making the pancakes fluffier. If using all-purpose flour, a 2–3 minute rest is enough.
Heat the pan: Warm a nonstick skillet or griddle over medium heat.
Lightly coat with oil or butter.
Cook the pancakes: Pour 1/4 cup batter per pancake. Cook until bubbles form on top and edges look set, 2–3 minutes. Flip and cook another 1–2 minutes, until golden and cooked through.
Adjust heat as needed: If they brown too fast, lower the heat slightly.
Wipe the pan and re-grease between batches for even browning.
Serve warm: Top with berries, a spoonful of yogurt, or a drizzle of maple syrup. For extra protein, add a dollop of nut butter.