Baked Cheesy Potato Casserole

5 from 5 votes
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This creamy baked cheesy potato casserole is comfort food at its very best! This dish works just as well as the main dish or a filling side offering and it’ll be a hit with any crowd, whether you’re serving up a family meal or entertaining guests. It only takes minutes to prepare to bake and is also the ultimate potluck go-to!

close up spoonful of Baked Cheesy Potato Casserole topped with chives and bacon
Baked Cheesy Potato Casserole

Potato Casserole

If you think you haven’t heard of potato casserole before, you might actually be mistaken! Potato casseroles are known by a few different names such as funeral potatoes (these are made with hashbrowns), party potatoes, cheesy potato bake, and cheesy hashbrown potatoes. My version of the potato casserole uses garlic mashed potatoes and loads of flavor! It goes great with a roast beef like my pop pot roast recipe, or my fast and easy shredded beef recipe. All you need to know is that this is an absolutely mouthwatering dish and it goes AMAZINGLY with my fast and easy Greek pasta salad if you are looking for amazing side dish ideas.

How To Make Cheesy Potato Casserole

You’ll need to start with your Garlic Mashed Potatoes.

  1. Place the potatoes in a large saucepan and fill it up until they’re completely submerged in the water. Then add the salt.
  2. Boil over medium-high heat and reduce the heat until just simmering. Maintain at a low rolling boil to stop the potatoes from boiling over.
  3. Keep cooking the potatoes until they fall apart easily when pierced with a fork, then remove them from the heat, drain off the water, and let them sit in the colander as they drain.
  4. Heat up the half-and-half, garlic puree, and butter in a saucepan (a smaller medium size will do here) over medium here until slightly simmering.
  5. Take off the heat and set your potatoes aside.
  6. Use a masher or potato ricer to mash the potatoes until they’re smooth, then mix in the hot garlic mixture until it’s thoroughly combined.

Once that’s done, it’s time to assemble the Potato Casserole.

  1. Preheat your oven to 375 F and grease a baking pan (9×13 will do the trick), then set it aside.
  2. Mix in about a quarter cup of bacon, 1 cup of cheese, and half of the green onions into your garlic potato mixture.
  3. Place the mixture in a baking dish and spread evenly, then top it off with the green onions and cheese and a sprinkling of the remaining bacon.
  4. Use aluminum foil to cover the dish and bake in the oven for about 25 minutes until it’s heated through and the cheese has melted.
  5. If you want to let the cheese brown, remove the foil and cook for another 10 minutes or so.
  6. Once it’s done, take it out of the oven and let it sit for 5-10 minutes before serving.

spoonful of Baked Cheesy Potato Casserole from a baking pan with kitchen cloth underneath

Tips And Tricks For Making Baked Cheesy Potato Casserole

  • It’s a lot handier to get the recipe together the night before. Just cover it well and put it in the refrigerator overnight. When you’re ready to serve, let it stand for around 30 min once it’s out of the refrigerator and then bake as directed. Once it’s baking you can start prepping the other last-minute items on your list.
  • Flavor your mashed potatoes before you add them to the dish – make sure they are as garlicky as you like!
  • You can add whatever toppings you can think if! Use sour cream, different shredded cheese, the world is your oyster.
  • You can freeze this and make it ahead as well. Simply cover well to protect it from freezer burn and then take it out and bake when you need it .

close up spoonful of Baked Cheesy Potato Casserole from a baking pan

More Casserole dishes to try:

Johnny Marzetti Casserole – (Ground Beef Casserole Recipe)

Hamburger Hotdish Tater Tot Casserole

Creamy Ham and Noodle Casserole

Asparagus Green Bean Casserole

Mushroom Soup Chicken & Rice Casserole



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This cheesy potato casserole is comfort food at it's best! Simply put it together and bake in the oven for the perfect side dish!

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Baked Cheesy Potato Casserole

This cheesy potato casserole is comfort food at it's best! Simply put it together and bake in the oven for the perfect side dish!
5 from 5 votes
close up spoonful of Baked Cheesy Potato Casserole topped with chives and bacon
Prep Time
40 minutes
Cook Time
30 minutes
Side Dish
Karlynn Johnston


Garlic Mashed Potatoes

  • 2.5 pounds russet potatoes peeled and diced all the same size
  • 2 teaspoons salt
  • 1/2 cup half-and-half cream
  • 1/4 cup salted butter
  • 2 tablespoons garlic puree

Filling Ingredients

  • 1/2 cup sour cream
  • 3/4 teaspoon pepper
  • 1/2 cup chopped cooked bacon divided
  • 2 cups cheddar cheese divided


  • shredded cheddar cheese
  • 2-3 tablespoons chives or green onions diced
  • bacon


Garlic Mashed Potatoes

  • Place the potatoes in a large saucepan and fill until they are covered in water. Stir in the salt.
  • Bring the pot to a boil over medium-high heat. Reduce to a lower heat until the potatoes are just simmering, a low rolling boil. Keeping it at this lower boil will help prevent them from boiling over.
  • Cook until the potatoes fall apart when pierced with a fork.
  • Remove the potatoes from the heat and drain off the water in a colander. Let them sit there draining.
  • Heat the half-and-half, the butter and the garlic puree in a medium saucepan over medium heat until simmering slightly, then remove from the heat and set aside.
  • Mash the potatoes using a masher or a potato ricer until smooth.
  • Mix in the hot garlic mixture until combined through.

To Assemble the Potato Casserole

  • Preheat the oven to 375 °F. Grease a 9x13 baking pan and set aside.
  • Gently mix in 1/4 cup of the bacon, 1 cup cheese and half of the green onions into the garlic potato mixture.
  • Spread the mixture out in the baking dish, then top with the remaining cheese and green onions. Sprinkle the remaining 1/4 cup of bacon on top. Cover with aluminum foil.
  • Bake in the oven until completely heated through and the cheese is melted, around 20-25 minutes.
  • If desired, remove the foil and cook for another 10 minutes, letting the cheese brown.
  • Remove and let sit for 5-10 minutes, then serve.

Recipe Notes

You can play around with the ingredients as you like! Add more sour cream to taste, different cheese, etc.

Nutrition Information

Calories: 363kcal, Carbohydrates: 29g, Protein: 14g, Fat: 22g, Saturated Fat: 13g, Cholesterol: 65mg, Sodium: 954mg, Potassium: 709mg, Fiber: 2g, Sugar: 2g, Vitamin A: 603IU, Vitamin C: 10mg, Calcium: 262mg, Iron: 2mg

All calories and info are based on a third party calculator and are only an estimate. Actual nutritional info will vary with brands used, your measuring methods, portion sizes and more.

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Karlynn Johnston

I’m a busy mom of two, wife & cookbook author who loves creating fast, fresh meals for my little family on the Canadian prairies. Karlynn Facts: I'm allergic to broccoli. I've never met a cocktail that I didn't like. I would rather burn down my house than clean it. Most of all, I love helping YOU get dinner ready because there's nothing more important than connecting with our loved ones around the dinner table!

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Comments & Recipe Tips Share a tip or comment!

  1. Lisa says

    This looks like a great way to make mashed potatoes in advance, and of course CHEESE! What is garlic purée? I always chop fresh garlic, I generally use fresh garlic.

    • Mr. Kitchen Magpie says

      It’s garlic that’s found in a small tube, similar to anchovy paste. You should be ok using fresh garlic (just mince finely), this is just a stronger flavor profile.5 stars

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