Combine the pasta noodles, water, and salt in a large microwave safe bowl (i used a 4 cup pyrex glass measuring cup). Microwave for 6 minutes total, taking the bowl out and stirring every 2 minutes. (Water should be almost completely absorbed at this point, and pasta al dente).
Add 2 tbs of the cheddar cheese, the milk, and cottage cheese, (and pepper and mustard powder if desired.) Stir, and microwave another 2 minutes, or until cheese and cottage cheese are melted. Stir once more after removing from microwave, add the additional 1 tbs cheddar, and stir until everything is combined. Enjoy!