5.0 from 36 votes
Leftover Mashed Potato Casserole
Mashed Potato Casserole is an easy way to use up leftover mashed potatoes. They are layered in a casserole dish with cheese, ham, and a crispy topping.
Prep Time
20 mins
Cook Time
20 mins
Total Time
1 hr 5 mins
Servings: 4 servings
Calories: 460 kcal
Course:
Side Dish , Main Course
Cuisine:
Italian
Ingredients
- 1-2 tablespoons freshly grated Parmesan cheese
- 1-2 tablespoons bread crumbs
- 3 cups mashed potatoes*
- ⅓ cup all purpose flour
- ⅓ cup freshly grated Parmesan cheese
- ½ teaspoon salt
- 2 dashes black pepper
- 1 large egg
- ¾ cup cubed cooked ham or speck (100 - 150 grams)
- 1 cup shredded Fontina/Gruyere
- 1-2 tablespoons butter
*It's best to use mashed potatoes that haven't been dressed but those would work also.
Instructions
- Pre-heat oven to 350F (180C). Lightly grease and flour a medium 8 ½ x 4½ inch (21 x 11 cm) baking dish.
- In a small bowl mix together the parmesan cheese and bread crumbs. Set aside.
- In a large bowl add the mashed potatoes, flour, parmesan cheese, salt, pepper and egg. Mix to combine.
- Transfer ⅔ of the mixture to the prepared baking dish, and spread it evenly on the bottom and up half the sides of the pan.
- Sprinkle the cubed ham or speck on top, top with the shredded cheese, top with small spoonfuls of the remaining mashed potato mixture on top. Sprinkle the bread crumb mixture on top and dot with butter. Bake in the pre-heated oven for 35-45 minutes or until browned on top. Let sit 5-10 minutes before serving. Enjoy!
Cup of Yum
Notes
- The most common potato used are Russets, however Yukon Gold and red potatoes can also be used.
- If needed to brown the top, broil for 2-3 minutes.
- Yes it can be made ahead, be sure to cover the unbaked casserole and refrigerate, it will keep for up to 24 hours in the fridge.
- Leftovers should be stored covered or in an airtight container in the fridge. They will keep for up to 4 days in the fridge. Reheat covered in a low oven until heated through or in the microwave.
- The casserole can be frozen, be sure to cool it completely in the baking dish, then cover it with plastic wrap and again with foil. It will keep in the freezer for up to 1 month. Thaw overnight in the refrigerator. Bake in a low oven until warmed through.
- The casserole can be made ahead, be sure to cover the unbaked casserole and refrigerate, it will keep for up to 24 hours in the fridge.
Nutrition Information
Calories
460kcal
(23%)
Carbohydrates
47g
(16%)
Protein
24g
(48%)
Fat
19g
(29%)
Saturated Fat
11g
(55%)
Polyunsaturated Fat
1g
Monounsaturated Fat
6g
Trans Fat
1g
Cholesterol
114mg
(38%)
Sodium
901mg
(38%)
Potassium
633mg
(18%)
Fiber
3g
(12%)
Sugar
2g
(4%)
Vitamin A
558IU
(11%)
Vitamin C
41mg
(46%)
Calcium
470mg
(47%)
Iron
2mg
(11%)
Nutrition Facts
Serving: 4servings
Amount Per Serving
Calories 460
% Daily Value*
| Calories | 460kcal | 23% |
| Carbohydrates | 47g | 16% |
| Protein | 24g | 48% |
| Fat | 19g | 29% |
| Saturated Fat | 11g | 55% |
| Polyunsaturated Fat | 1g | 6% |
| Monounsaturated Fat | 6g | 30% |
| Trans Fat | 1g | 50% |
| Cholesterol | 114mg | 38% |
| Sodium | 901mg | 38% |
| Potassium | 633mg | 13% |
| Fiber | 3g | 12% |
| Sugar | 2g | 4% |
| Vitamin A | 558IU | 11% |
| Vitamin C | 41mg | 46% |
| Calcium | 470mg | 47% |
| Iron | 2mg | 11% |
* Percent Daily Values are based on a 2,000 calorie diet.