Black Bean Tacos

These Black Bean Tacos deliver family dinner for about $6, undercutting the average taco night by 40%. Two cans of black beans ($1.78) provide protein that rivals ground beef at a quarter of the cost. Mash half the beans, leave the rest whole, and season aggressively with cumin, chili powder, garlic, and lime juice over a pack of corn tortillas ($1.50). Add scrounged toppings like salsa, sour cream, or shredded cheese. Toppings and total add up to $6, making this meal 25% cheaper than the Baked Potato Bar (rank #6). The protein content matches the Chicken Stir-Fry (rank #7) but at half the price, ideal for any night of the week.