Italian Scalloped Potatoes

• 4 1/2 potatoes
• 1 1/2 onion
• 1/2 italian seasoning
• 1/2 casserole dish arrange
• 1/2 mozzarella cheese
• 1/2 parmesan cheese
• 110 gr mozzarella cheese (shredded)
• 60 ml milk
• 20 gr parmesan cheese (grated)
• 1 gr garlic powder