Fiesta Enchiladas

• 12 corn tortillas
• 1 onion (chopped)
• 1/2 green chile salsa
• 900 gr beef (lean ground)
• 375 gr tomato soup
• 280 ml enchilada sauce
• 250 gr monterey jack cheese (grated)
• 120 ml tomato sauce
• 40 gr parmesan cheese (grated)
• 38 gr spinach (frozen chopped thawed)