In a small saucepan, combine the rolled oats, water, and salt. Bring to a gentle simmer over medium heat, stirring occasionally, until the oats absorb most of the liquid and start to soften (about 4–5 minutes).
While the oats cook, whisk together cottage cheese (or yogurt), vanilla protein powder, and vanilla extract in a small bowl until fully smooth — aim for a silky, lump-free mixture.
Once the oats are cooked, remove from heat and let them sit for 30 seconds to cool slightly (this helps prevent the protein from clumping).
Stir the cottage cheese–protein mixture into the oats until combined and creamy. If the texture seems too thick, add a splash of water or milk to loosen it.
Transfer the creamy protein oatmeal to a bowl. Top with mixed berries, chopped nuts (if using), and a drizzle of honey or maple syrup if you like added sweetness.
Serve immediately while still warm — enjoy the creamy texture, the burst of berry freshness, and the nutty crunch.