About $1.90 per serving
Start by preheating an oven to 375°F. Line a large, rimmed baking sheet with foil; oil lightly.
Next, heat oil in a large skillet over medium-high heat. Mix in celery and onion and cook, stirring often, until soft for about 3 to 5 minutes. Add garlic and cook for another minute.
You’re doing great. Pour the beans into a large bowl and mash. Mix in the vegetables from skillet, stir in egg, cumin and bread crumbs. Season with salt and pepper.
Almost there! Make 4 to 6 patties and place them the baking sheet. Bake the patties for about 10 minutes on each side until firm and set. Serve on whole-grain buns with lettuce, and tomato. If you’re feeling adventurous add more vegetables, like red onion.
Approximate nutritional information per serving: Calories 215, Fat 9 g, Sat. fat 1 g, Protein 8 g, Carbohydrate 28 g, Fiber 7 g, Cholesterol 53 mg, Sodium 821 mg
Inspiration from: http://www.allyou.com/food/family-meals/cheap-healthy-recipes