Saute The Onions, Spices and Peppers: Heat oil in a large nonstick skillet over medium-high heat. Add onion, oregano, salt, pepper, and poblano, and sauté 5 minutes or until onion is tender.
Assemble: Take one tortilla, and arrange about 3/4 cup of the bean/veggie mixture on half of the tortilla. Sprinkle 2 Tbsp cheese over the bean mixture.