Start by cooking your pasta in a large pot of salted boiling water until al dente, following the package instructions. Once done, drain and return the pasta to the pot. Add a drizzle of olive oil to prevent sticking.
Meanwhile, heat ½ teaspoon of olive oil in a skillet over medium heat. Add chopped onion and minced garlic, then sauté for 3–5 minutes until soft and fragrant.
Transfer the sautéed onion and garlic to a blender along with the cottage cheese, grated Parmesan, milk, salt, and pepper. Blend on high until completely smooth and creamy. Taste and adjust the seasoning if needed.
Pour the cottage cheese sauce over the cooked pasta and stir until fully coated and creamy. Only if needed, gently reheat on low for 1–2 minutes. Avoid high heat, as the sauce may separate and become grainy.
Serve your creamy cottage cheese pasta topped with extra Parmesan, diced tomatoes, or your favorite herbs and toppings. Enjoy right away for the best texture.