Fry the beans, leeks, peppers and garlic until just soft, adding the mushrooms and tomatoes in the last few minutes.
Spoon the mixture into your burrito. Fold over and cover with salsa sauce, the sour cream and the cheese.
Nutritional Information:
520 Calories (kcal); 38g Total Fat; (64% calories from fat); 30g Protein; 16g Carbohydrate; 119mg Cholesterol; 723mg Sodium
