01 -
Preheat oven to 375°F (190°C).
02 -
Cook lasagna noodles according to package directions until al dente. Drain and set aside.
03 -
Brown Italian sausage or ground beef in a skillet over medium heat; drain excess fat. Stir in spaghetti sauce, tomato sauce, and Italian seasoning. Simmer over low heat for 5-10 minutes until the sauce thickens. Remove from heat and set aside.
04 -
In a large bowl, combine cottage cheese, softened cream cheese, sour cream, beaten egg, and dried parsley until well mixed. Set aside.
05 -
Lightly spray a 9×13-inch (23×33 cm) baking dish with cooking spray. Spread 1 cup of meat sauce evenly across the bottom of the pan.
06 -
Arrange 6 lasagna noodles lengthwise and overlapping to cover the sauce. Spread half of the cheese mixture over the noodles, then add one-third of the mozzarella slices. Pour half of the remaining meat sauce over the cheese and sprinkle with 1/4 cup parmesan.
07 -
Repeat layering with remaining 6 lasagna noodles, followed by the rest of the cheese mixture, another third of the mozzarella, and remaining meat sauce. Sprinkle with remaining parmesan cheese.
08 -
Top with the last portion of mozzarella cheese. Cover tightly with aluminum foil.
09 -
Bake covered for 25 minutes. Remove foil and continue baking uncovered for an additional 30 minutes until bubbly and edges are golden brown.
10 -
Allow lasagna to stand for 15 minutes before cutting and serving to set the layers.