Saute onion in oil until tender. Add imitation crab meat , beans, tomatoes, green chilies and seasonings. Cook and stir until thoroughly heated. Remove from heat and stir in cheese. Wrap tortillas in Reynolds Aluminum Foil and heat at 350F 10 to 15 minutes or until warm. Wrap 1/2 cup seafood mixture in each tortilla. Serve each burrito with 2 ounces salsa or garnish as desired (sour cream, olives, etc.)