Beef Enchilada Pie

• 6 corn tortillas
• 1 l extra beef (lean ground)
• 1 fat (reduced)
• 1/2 onion (chopped)
• 400 gr kidney beans (cooked)
• 120 gr pinto beans (drained)
• 120 ml cream of mushroom soup
• 80 gr sharp cheddar cheese (grated)
• 70 gr green chilies (diced)
• 1 gr chili powder