Bake corn tortillas for approximately 3 to 5 minutes per side until they are slightly brown on each side. You want the tortillas to be crispy. Watch carefully so they don't burn.
Heat beans and spread 1/4 cup on each tortilla.
Spread 1 tablespoon of fat free sour cream over the beans.
Garnish with lettuce, tomatoes, green chile or salsa, and onions.