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.
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.
Heat 1 tablespoon oil in a nonstick skillet over medium heat. Scoop 1/4 cup portions, flatten into 1/2-inch-thick patties.
Cook 3–4 minutes per side until deeply golden and crisp. Don’t flip early—let a crust form first.
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.
Heat oven to 400°F (200°C). Lightly grease a 12-cup muffin tin.
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.
Spoon into the muffin cups, filling each about 3/4 full. If you have extra cheese, sprinkle a little on top.
Bake 18–22 minutes until the edges are golden and the tops feel set.
Cool 5 minutes, then loosen with a butter knife.
Serve with a simple salad or frozen peas tossed with butter and salt.
Warm 1 tablespoon oil in a large skillet over medium heat. Add 1 small chopped onion and cook until soft, 3–4 minutes.
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.
Cook undisturbed for 5–7 minutes to form a crispy bottom. Flip sections with a spatula and cook another 3–5 minutes.
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.