Taco-Stuffed Smashed Potatoes
Price per serving: $3.10
Tacos are one of the cheapest meals to make—even if you go beyond basic. “These crispy, roasted smashed potatoes are loaded with potassium and fiber, and stuffed with lean ground beef,” says Julie Andrews, R.D.N., a recipe developer based in Appleton, WI. For an extra few bucks, you can add your favorite taco toppings, like avocado and green onions.