Fry ground beef with diced onion; add salt and pepper to taste.
Boil rotini al dente, according to package directions.
Add cottage cheese to hamburger/onion mix.
Pour pasta sauce over mix.
Stir in cooked pasta.
Scoop mixture into greased 10 x 15 casserole dish.
Top with mozzarella cheese.
Bake at 350°F for about 15 minutes, or until cheese is bubbly.
Video
Notes
Al dente is the ideal consistency for pasta. The pasta will be tender and will still have a slightly firm texture when you bite into it.
For an even quicker cooking time, ground beef can be cooked ahead of time. Store in the refrigerator for up to 3 days or in the freezer for up to a month.
If you do thaw and eat it the same day, add extra baking time and check to be sure you’re not burning the edges.