01 - Set oven to 350°F.
02 - In a large skillet over medium heat, cook ground beef until no longer pink. Drain excess fat.
03 - Add finely chopped onion and minced garlic to the skillet. Sauté until softened, about 2 to 3 minutes.
04 - Incorporate diced tomatoes with juices, tomato sauce, tomato paste, Italian seasoning, salt, and pepper. Simmer for 10 minutes.
05 - Prepare egg noodles in a large saucepan according to package instructions until al dente. Drain thoroughly.
06 - In a medium mixing bowl, combine sour cream and cottage cheese until smooth.
07 - In a greased 9x13 inch casserole dish, arrange half the noodles, spread with half the cheese mixture, then layer half the beef mixture. Repeat layers with remaining ingredients.
08 - Sprinkle shredded cheddar cheese evenly across the surface.
09 - Place uncovered in the oven and bake for 25 to 30 minutes, until top is golden and casserole is bubbling.
10 - Allow casserole to rest for 10 minutes before portioning and serving.