Preheat oven to 350 degrees F.
Brown Italian sausage in a large skillet over medium heat. While sausage is cooking, boil pasta according to package. (Around 10 minutes.) Drain pasta once finished cooking.
Once sausage is finished cooking, pour in marinara and stir the sausage to combine. Let sit on low heat until ready to use.
In a bowl, stir together cottage cheese, eggs, 1/2 cup mozzarella cheese, 1/4 cup Parmesan cheese, chopped parsley, salt and pepper.
Spray a 9 x 13 baking dish with non-stick cooking spray.
Add half the sauce mixture and spread over bottom of casserole dish.
Top with half the cooked pasta. Top with ALL of the cottage cheese mixture.
Top with remaining pasta, remaining sauce, 1 cup mozzarella and 1 cup Parmesan. Cover dish in foil and bake for 30 minutes.
Remove baking dish from oven and remove foil. Finish baking for 10 minutes or until cheese is melted.