Sicilian Potato Bake

• 2 lowfat added last
• 1 1/2 beau monde seasoning
• 1 thinly onion divided (sliced)
• 425 gr hashed brown potatoes divided
• 120 ml milk
• 110 gr mozzarella cheese divided (shredded)
• 2 gr oregano
• 1 gr pepper
• 2 slices thinly tomatoes divided (sliced)