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Leftover Mashed Potato Recipes — Feed 4 for Under $5 - Simple, Cozy, and Budget-Friendly

Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings: 4 servings

Ingredients
  

  • 3 to 4 cups leftover mashed potatoes (cold works best)
  • 1 large egg (optional for potato cakes and cups, helps bind)
  • 1/2 cup all-purpose flour or 1/2 cup breadcrumbs (for binding and crisping)
  • 1 small onion, finely chopped or grated (or 3 green onions, sliced)
  • 1/2 cup shredded cheese (cheddar or any melty cheese; optional but nice)
  • 2 tablespoons oil or butter (for frying or greasing tins)
  • Salt and pepper, to taste
  • Optional flavor boosters: garlic powder, paprika, dried parsley, leftover cooked veggies, chopped ham or bacon bits

Method
 

  1. In a bowl, mix 3 cups mashed potatoes, 1/4 cup flour (or breadcrumbs), 1/2 small onion (grated), 1 egg (optional), 1/4 teaspoon garlic powder, and a pinch of salt and pepper.
  2. Stir until the mix holds together. If it’s too soft, add a tablespoon more flour at a time. If too dry, splash in a teaspoon of milk or water.
  3. Heat 1 tablespoon oil in a nonstick skillet over medium heat. Scoop 1/4 cup portions, flatten into 1/2-inch-thick patties.
  4. Cook 3–4 minutes per side until deeply golden and crisp. Don’t flip early—let a crust form first.
  5. Repeat with remaining mixture, adding a touch more oil as needed. Serve warm with sour cream, yogurt, or a quick dip of ketchup plus a dash of hot sauce.
  6. Heat oven to 400°F (200°C). Lightly grease a 12-cup muffin tin.
  7. In a bowl, combine 3 cups mashed potatoes, 1 egg, 1/2 cup shredded cheese, 1/2 small onion (finely chopped), and pepper to taste.
  8. Spoon into the muffin cups, filling each about 3/4 full. If you have extra cheese, sprinkle a little on top.
  9. Bake 18–22 minutes until the edges are golden and the tops feel set.
  10. Cool 5 minutes, then loosen with a butter knife. Serve with a simple salad or frozen peas tossed with butter and salt.
  11. Warm 1 tablespoon oil in a large skillet over medium heat. Add 1 small chopped onion and cook until soft, 3–4 minutes.
  12. Spread 3–4 cups mashed potatoes in the pan. Press lightly with a spatula to form an even layer. Season with salt, pepper, and paprika if you like.
  13. Cook undisturbed for 5–7 minutes to form a crispy bottom. Flip sections with a spatula and cook another 3–5 minutes.
  14. Stir in any small bits of leftover veggies or protein. Top with a sprinkle of cheese, cover for 1–2 minutes to melt, and serve.