Cook brown rice in water according to package directions.
Brown sausage, onion and garlic in skillet over medium heat until sausage is cooked fully.
Add zucchini to the skillet 5 or 7 minutes before sausage is done.
Drain meat and rinse with hot water to remove extra grease.
Return meat to the skillet.
Stir in tomato sauce and oregano.
Stir cottage cheese into cooked rice.
Pour rice into greased casserole dish.
Top with meat mixture.
Place Sargento cheese slices over top of meat.
Bake at 350 for 20 minutes or until hot.