In a medium pot, boil water and cook noodles as directed on the packaging. Reserve 1 cup of the pasta water for later.

In a blender, add milk, cottage cheese, half the cheddar cheese, ground mustard, garlic powder, and pepper, and blend until smooth.

In a large pot, add cheese mixture and heat on medium until hot but not boiling, stirring occasionally. Turn off the heat and stir in the rest of the cheddar cheese until melted.

Stir in pasta and add ½ cup pasta water. Let mixture set for 5 minutes before serving. If desired, add any additional pasta water until sauce reaches desired consistency. Serve and enjoy!