Preheat oven to 450F Spray skillet with cooking spray; heat to medium and saute onion, garlic, jalapeno and cumin for about 5 mins Add beans and mix. Add tomato and cilantro and stir, cooking for about 2 mins Spoon a nice helping of the mixture onto each tortilla. Add cheese. Fold them over and spray with cooking spray, and place on baking sheet Bake for 5 to 7 mins, or until they have browned. Serve with salsa and sour cream