Cheesy Enchilanda Casserole

• 8 corn tortillas
• 3 garlic (cloves minced)
• 1 bell pepper (chopped)
• 500 gr black beans (drained)
• 475 gr stewed tomatoes mexican
• 450 gr extra beef (lean ground)
• 450 ml tomato sauce
• 240 ml picante sauce
• 110 gr nonfat cheddar cheese (shredded)
• 65 gr ripe olives