Mashed Potato Hot Dog Casserole Recipe

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Avatar Author's default profile picture Team Published: February 23, 2021 Modified: April 15, 2021
Barbara Bradley | flickr
Barbara Bradley | flickr

Our favorite hot dog casserole with creamy mashed potatoes and cheese are baked into one heavy plate! It is the fusion we’ve all been wanting to recreate as one of our childhood favorites. It’s the next big thing after mom’s sausage casserole. Enjoy every bite of creamy mashed potatoes with meaty and chunky hot dogs. This combination is made even tastier with the tangy and salty flavors of yellow mustard baked under layers of yummy melted cheese.

Tips For Making Your Hot Dog Casserole Better

This comfort food is deliciously fun and definitely easy to make. Here are some tips that’ll help your hot dog casserole and mashed potatoes get oh so better!

  • Consider using cheese dogs. If you want something cheesier, store-bought hot dogs with cheese fillings will be a great option.
  • Cook your hot dogs first. Cooking the hot dogs before baking them with the rest of the ingredients would give the casserole extra juices and a savory taste.
  • Cheese is a must-add. Everyone loves cheese, especially the little ones. For this dish, we highly recommend topping it with crumbly cheeses like parmesan or cheddar cheese for a crispy top. But if you’re looking for a creamier cheese casserole, use easy-to-melt cheeses like swiss and/or mozzarella cheese instead.
  • Use russet potatoes. They have a naturally starchy and creamy taste and a soft and smooth texture. These qualities are what make them perfect for baking and mashing.
  • Consider mashing your potatoes manually. Russet potatoes are already smooth so you won’t be needing any electric grinder to mash them because we don’t want them to be too runny or sticky. Simply mash them manually using a spoon or potato masher.
  • Fill your casserole with just the right amount. Make sure to fill your casserole that only covers at least ¾ of the dish. Overfilling will give you a messy dish, while underfilling will dry out the contents of the casserole.

How To Make Mashed Potato Hot Dog Casserole

Serve this chunky and creamy 5-ingredient mashed potato and hot dog casserole for breakfast. This kid-friendly meal will definitely become the kids’ next favorite dish.

Prep: 30 mins
Cook: 35 mins
Total: 1 hr 5 mins
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  • 17 pcs hot dogs
  • 4 tbsp yellow mustard
  • 4 cups parmesan cheese
  • 4 cups cheddar cheese

For Mashed Potatoes:

  • 5 lbs russet potatoes,  peeled and quartered
  • 4 tbsp butter
  • cups milk
  • salt and pepper


  1. Preheat the oven to 350 degrees F.

Prepare Mashed Potatoes:

  1. Peel the potatoes and cut them into 1-inch cubes.

  2. Place the potatoes in a pot of water and boil the potatoes with a pinch of salt until tender, about 20 minutes.

  3. In a heated saucepan, melt the butter and add the milk over low heat.

  4. Drain the potatoes and add to the mixer. Add the butter and milk to whisk.

  5. Mix to combine until potatoes are whipped smooth.

  6. Season with salt and pepper to taste.


  1. Cut hot dogs in half and lay them in the casserole pans.

  2. Cover the hot dogs with mustard, and spread mashed potatoes on top.

  3. Bake for about 30 minutes.

  4. Sprinkle with cheese and return to bake on low heat for 5 minutes.

  5. Serve and enjoy.

Recipe Notes

  • If you don’t have a mixer, you can manually mash the potatoes with a potato masher and subsequently add in the milk, melted butter, garlic, and salt to be mixed.

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Commonly Asked Questions

How to store cooked hot dog casserole?

You can store the panned casserole in the freezer for 3 to 4 days. However, transferring them from the pan to freezer bags before storing them in the freezer keeps the mashed potato hot dog casserole fresher over the same period of time.

How to reheat cooked but frozen casserole?

If stored in the freezer, let it thaw in the fridge overnight before reheating them. Then, place it inside the oven with a loose foil cover and heat it at 350 degrees F for 20 to 30 minutes.


This recipe gives those hot dogs inside your fridge a yummy role! This is the opportunity to combine hot dogs and mashed potatoes and turn them into a cheesy, chunky, and creamy casserole dish. The tangy sweetness and spiciness of the yellow mustard made this dish more enjoyable. Try making this easy family-friendly dish, for this might be your next top favorite among your hot dog recipes!

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