Cook pasta shells to al dente. Drain but don't rinse.
In a blender, combine cottage cheese, milk, cheddar, garlic salt, and cornstarch. Blend until smooth.
Add sauce to the same pot the pasta was cooked in and heat until a simmer is reached. Cook until thick and creamy, about 5 minutes.
Add noodles to the sauce (or sauce to noodles), stir in additional cheddar if using and enjoy!
