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Cheesy Mashed Potato Casserole with Hot Dogs

Creamy mashed potatoes mixed with colorful vegetables, savory hot dogs, and melted mozzarella, baked until golden. A comforting, kid-friendly casserole that turns simple ingredients into a complete family meal.
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Prep Time 25 minutes
Cook Time 30 minutes
Total Time 55 minutes
Servings 6
Calories 420 kcal

Equipment

  • 1 | Large pot | for boiling potatoes
  • 1 | Mixing bowl |
  • 1 | Potato masher or fork |
  • 1 | Non-stick frying pan | for hot dogs
  • 1 | Glass baking dish | 24 cm or similar
  • 1 | Spatula |

Ingredients
  

  • 3 | | large potatoes | peeled and cubed
  • 3 | tbsp | butter | for mashing
  • 0.5 | cup | full-fat milk |
  • 2 | tbsp | heavy cream | optional
  • 0.5 | tsp | salt |
  • 0.5 | tsp | dried thyme |
  • 0.25 | tsp | ground nutmeg |
  • 1 | | medium carrot | grated
  • 4 | | green onions | chopped
  • 0.5 | cup | corn kernels |
  • 0.5 | cup | sliced black olives |
  • 6-7 | | hot dogs or sausages | sliced
  • 3 | | garlic cloves | minced
  • 1 | tbsp | butter | for frying
  • 1 | tbsp | oil | for frying
  • 1.5 | cups | shredded mozzarella |
  • | | fresh parsley | for garnish

Instructions
 

  • Peel and cube the potatoes, then boil in salted water until completely tender.
  • Drain and mash the hot potatoes with butter, milk, and optional cream until smooth.
  • Season the mash with salt, thyme, and nutmeg.
  • Stir in grated carrot, chopped green onions, corn, and sliced olives.
  • Slice the hot dogs and sauté them in butter and oil with minced garlic until lightly golden.
  • Fold the cooked hot dogs into the potato mixture.
  • Spread half the mixture in a greased baking dish, add a layer of mozzarella, then top with the remaining mash.
  • Bake at 200°C for 25-30 minutes until golden. Optionally top with extra cheese and broil briefly, then sprinkle with parsley.

Notes

Store leftovers covered in the refrigerator for up to 3 days.
Reheat individual portions in the microwave or oven until hot.
Assemble ahead and refrigerate unbaked for up to 24 hours.
For a vegetarian version simply omit the hot dogs.