Don't Toss That! 7 Creative Ways to Use Up Leftover Mashed Potatoes

Stop Throwing Away Those Leftover Mashed Potatoes!

We've all been there — you made a mountain of mashed potatoes for Sunday dinner, and now you're staring down a bowl of leftovers with no plan. Before you reach for the trash can, stop right there! Leftover mashed potatoes are one of the most versatile ingredients in your kitchen. They're already cooked, already seasoned, and ready to be transformed into something spectacular.

Here are seven genius ways to give your mashed potatoes a second life — and the star recipe we're diving deep into today is Crispy Mashed Potato Cakes.

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Crispy Mashed Potato Cakes

These golden, pan-fried potato cakes are crispy on the outside, creamy on the inside, and endlessly customizable. They make a perfect breakfast side, a quick lunch, or a satisfying snack.

Ingredients

• 2 cups cold leftover mashed potatoes
• 1 large egg
• ¼ cup shredded cheddar cheese
• 2 tablespoons chopped chives or green onions
• ¼ cup all-purpose flour (plus more for dusting)
• Salt and black pepper to taste
• 2 tablespoons olive oil or butter (for frying)
• Sour cream or applesauce, for serving

Instructions

1. Mix the base. In a large mixing bowl, combine the cold mashed potatoes, egg, shredded cheddar, and chopped chives. Season with salt and pepper. Stir until well combined.

1. Add the flour. Sprinkle in the flour and mix until a soft, slightly sticky dough forms. If the mixture feels too wet, add flour one tablespoon at a time.

1. Shape the cakes. Lightly flour your hands and a clean surface. Scoop about ¼ cup of the mixture and shape it into a round patty, roughly ½ inch thick. Repeat with the remaining mixture.

1. Pan fry to perfection. Heat olive oil or butter in a large skillet over medium heat. Once shimmering, add the potato cakes in batches — don't overcrowd the pan. Cook for 3–4 minutes per side until deeply golden and crisp.

1. Drain and serve. Transfer to a paper towel-lined plate. Serve hot with a dollop of sour cream, a sprinkle of chives, and your favorite hot sauce.

More Ideas for Leftover Mashed Potatoes

• 🥟 Potato Gnocchi — Mix with egg and flour for pillowy homemade gnocchi
• 🥧 Shepherd's Pie Topping — Spread over a ground beef and veggie filling and bake
• 🍞 Potato Bread — Add to your bread dough for extra-soft, fluffy loaves
• 🥣 Potato Soup — Whisk into warm broth with cream for a velvety soup
• 🌮 Stuffed Tacos — Use as a filling with black beans, salsa, and cheese
• 🧁 Mashed Potato Waffles — Press into a waffle iron for a crispy, savory treat

Tips & Variations

> Pro Tip: Cold mashed potatoes work best for potato cakes — they hold their shape much better than freshly made ones. This is truly a next-day recipe!

Make it cheesy: Swap cheddar for gruyère or parmesan for a more sophisticated flavor.

Make it hearty: Fold in crumbled cooked bacon or diced ham for a protein boost.

Make it gluten-free: Substitute the all-purpose flour with a 1:1 gluten-free blend or fine almond flour.

The next time your holiday table leaves you with a surplus of mashed potatoes, remember — it's not a leftover problem, it's a recipe opportunity. Happy cooking! 🥔✨