Black Bean and Spinach Quesadillas black bean and spinach quesadillas Serves 4-6 15 oz. can black beans 10 oz. frozen spinach 1/4 cup chopped onion 2 tsp lemon juice 1 Tbs olive oil 1 tsp chili powder 1 tsp ground cumin 1 tsp garlic powder 1 tsp salt Mexican cheese blend 8-10 flour tortillas