Bring a large pot of salted water to a boil. Add pasta and cook until al dente, about 8 minutes. Set aside ½ cup of pasta water before draining.

While pasta cooks, heat olive oil over medium-high heat. Add minced onion and a pinch of salt, sauté for 4-5 minutes until translucent. Add minced garlic and sauté for 1 minute. Remove from heat.

In a blender, combine cottage cheese, sautéed onion, garlic, a pinch of salt, and 3 tablespoons of the reserved pasta water. Blend until smooth and bubbly.

Return drained pasta to the pot. Pour the cottage cheese sauce over the pasta and toss to coat. Heat on low until warmed through.

Stir in grated parmesan cheese and chopped parsley. Season with additional salt and pepper to taste. Serve immediately.