Cowboy Cheeseburgers

• 4 tortilla
• 1 onion
• 1 jalapeno chile (fresh)
• 450 gr extra beef (lean ground)
• 16 ml taco sauce
• 1 gr coriander (ground)
• 1 gr cumin (ground)
• 1 gr salt
• 1 gr pepper
• 4 slices tomato