1 tablespoon butter
1/2 onion, minced
2 cups mashed potatoes, cold
1 teaspoon poultry seasoning
1/2 cup leftover cooked turkey, chopped
2 eggs, divided
1/2 cup all-purpose flour
1/2 cup panko breadcrumbs
2 tablespoons vegetable oil
Heat the butter in a skillet. Add the onion and cook, stirring occasionally and until tender, about 10 minutes.
Place the mashed potatoes in a bowl. Make a well in the center, then add the onion, poultry seasoning, and leftover cooked turkey. Beat one of the eggs and add it to the well. Use a wooden spoon to bring all of the ingredients together.
Line up three bowls on the counter. Place the flour in the first, the second egg in the second, and the panko in the third. Add a drop of water to the egg and beat well.
Form the mashed potato mixture into eight even patties about 1 inch thick. Dredge each of them in the flour, then the egg, and then the breadcrumbs.
Heat the vegetable oil over medium heat. Add the patties, then cook about 2-3 minutes per side, until golden brown.