Cheesy Mashed Potato Casserole

Are you ready to kick up your classic mashed potato dish a few notches? If so, you are going to love this cheesy mashed potato casserole which has a layer of warm toasted cheese on top—yum! Plus, I’ve added a make ahead note so this recipe can easily make an appearance on your holiday table this year. And since it calls for unpeeled potatoes, you can count on that extra nutritional punch that you wouldn’t get otherwise. Enjoy!

Cheesy Mashed Potato Casserole at 100 Days of #RealFood


Cheesy Mashed Potato Casserole on 100 Days of #RealFood

Cheesy Mashed Potato Casserole

You are going to love this cheesy mashed potato casserole which has a layer of warm toasted cheese on top - so yum! Plus, I've added a make ahead note.
5 from 8 votes
Prep Time: 10 mins
Cook Time: 25 mins
Total Time: 35 mins
Print Recipe
Servings: 6 side servings


  • 2 pounds russet potatoes aka baking potatoes
  • 2 tablespoons butter
  • 1/3 cup milk whole recommended
  • 1 teaspoon salt
  • pepper to taste
  • 3/4 cup cheddar cheese freshly grated


  • Set a pot of water over high heat to boil. Scrub the outside of the potatoes with water and a bristled brush (no need to peel!). Dice into 1 to 2 inch pieces. Add the potato pieces to the water and cook until tender when pierced with a fork, about 15 to 20 minutes.
  • Drain the water and puree the potatoes with an electric mixer or hand masher. Mix in the butter, milk, salt, and pepper until thoroughly combined and smooth being careful not to overmix.
  • Turn the oven broiler to high. Transfer the potatoes to a baking dish and top with an even layer of the grated cheese. Place it right under the broiler until the cheese is melted and just begins to brown (be sure to watch it closely!), about 5 to 8 minutes. Serve warm.


Make Ahead: Complete steps 1 and 2 in advance and refrigerate the mashed potatoes overnight. Then prior to step 3, heat the potatoes in the oven at 350 degrees F for 20 to 30 minutes.
We recommend organic ingredients when feasible.
Nutrition Facts
Nutrition Facts
Cheesy Mashed Potato Casserole
Amount Per Serving
Calories 218 Calories from Fat 81
% Daily Value*
Fat 9g14%
Saturated Fat 6g38%
Cholesterol 26mg9%
Sodium 522mg23%
Potassium 662mg19%
Carbohydrates 28g9%
Fiber 2g8%
Sugar 2g2%
Protein 7g14%
Vitamin A 280IU6%
Vitamin C 8.6mg10%
Calcium 137mg14%
Iron 1.4mg8%
* Percent Daily Values are based on a 2000 calorie diet.
Tried this recipe?Let us know how it was!


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39 thoughts on “Cheesy Mashed Potato Casserole”

  1. I live in the middle of nowhere and am curious what brands of cheese don’t use dye?? I haven’t been able to find cheese in my town that is dye free yet. Thank you!

  2. 5 stars
    Hello! I love your website, have bought your cookbook, etc… Thank you for it all! This recipe was a huge hit at my house. Question – is this gluten-free? I’m making a meal for a gluten-free family and wanted to include this. Thanks in advance.

  3. 5 stars
    We ended up making a double batch in a 13×9 dish to serve 10 people for Thanksgiving. A real hit, very easy, and something I felt good about serving.

  4. I don’t have Russet potatoes but do have butter golds and red potatoes, would either of these work without compromising the recipe? Which one would be better to use?

  5. Mmm looks awesome. I think I will take it 1 notch higher and add a little sour cream and green onion. I love your recipes, they’re simple and family friendly, easy to tweek for personal taste, but oh so good!

  6. cant wait to try this. on an unrelated note, i have a question about a recent post that i can not find, you mentioned that you ordered meat online and were pleased with it. i wanted to look into that option. can you send me the website info? thanks! love your posts!!!!

  7. I just love how you use simple and real ingredients. My kind of cooking! Often I see casserole recipes with all these extra and often unhealthy ingredients (e.g. canned soup). Obviously for those of us who would need more servings for a larger family or if using this as the main dish, you can simply double or triple the recipe like you would any other. :) I look forward to ordering your book!

      1. 5 stars
        Hi Lisa. Personally, I like your idea of 6-8 serving sizes. Even with healthy eating, calories can soar and moderation is key! This looks both rich and yummy, so I will try it for sure this holiday!

      2. My favorite part of Thanksgiving is having tons of choices, and sampling a little everything! We are a military family, so our holiday table consists of people from all over the country, and everyone brings a dish. It’s an awesome time to try something different!

      3. Ha! I certainly didn’t expect a personal reply to my goofy comment! I actually really like the recipes I’ve gotten from your site but I definitely have to double them for my family of six. I apologize if I hurt your feelings, I must have been feeling particularly silly that day. I truly appreciate your effort to educate people about the importance of eating real food and hope your site continues to grow as more people get hip to the idea :)

  8. These look delicious! Can’t wait to try them. I loved the cheesy hashbrown casserole, so I know this will be good.

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