The best way to use leftover mashed potatoes is to turn them into a brand-new dish altogether. A quick and easy way to do so is to make mashed potato waffles using eggs and flour.

Start by whisking two eggs in a bowl. Then, mix the eggs with your leftover mashed potatoes and some all-purpose flour, stirring thoroughly until everything is combined and smooth.

Finally, grease your waffle maker, scoop the batter into the machine, and cook it until crispy and golden-brown. The resulting savory meal is sure to upgrade your typical brunch.

Note that you can elevate the batter by incorporating herbs, spices, and other flavorings into it. You can also garnish the cooked waffles with whatever ingredients you prefer.