Pork Chop Spaghetti

• 6 shoulder pork chops
• 1 spaghetti sauce
• 240 ml water
• 110 gr mozzarella cheese (shredded)
• 40 gr parmesan cheese (grated)
• 30 gr onion (chopped)
• 14 gr butter
• 1/4 packages spaghetti