Brown the Italian sausage in a large skillet; drain.
Add tomato sauce, onion, garlic and black pepper to skillet and mix.
Simmer for 5 minutes.
Remove from heat.
Add the sour cream, cottage cheese, and cream cheese to the skillet and mix.
Mix in the egg noodles.
Pour contents of skillet into a 9 x 13 inch baking pan.
Sprinkle Mozzarella cheese over the top.
Place in oven and bake for 40 minutes, or until heated through and cheese is melted.
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