Combine sausage and garlic and cook through. Drain, as needed.
Mix tomato sauce into meat mixture and set aside.
In separate bowl, mix together ricotta cheese, mozerella cheese and Italian seasoning in large bowl.
In 9x11 baking dish, spread a layer of the meat sauce along bottom of pan. Lay 3 uncooked lasagna noodles across the bottom and top with ricotta cheese. Continue layering in this manner until you use all noodles in the box.
Bake at 350 for approximately 75-90 minutes or until knife inserts easily into lasagna noodles.
Let sit at least 10 minutes before cutting.
Notes
For ease of preparation, make this the day before and cover and refrigerate. Let sit out for an hour before baking.