Step 1

Bring a large pot of heavily salted water to a boil. Cook the pasta until al dente according to package directions. Reserve 1 cup pasta water, drain and return the pasta to the pot, covered.

Step 2

Place marinara sauce, cottage cheese, parmesan cheese, melted butter, crushed red pepper and pasta water in a high speed blender and blend until smooth and creamy, 1-2 minutes.

Step 3

Transfer the sauce on top of the cooked pasta and toss until combined and heated through. Serve immediately with more red pepper flakes and chopped parsley, if desired.