These baked mashed potatoes are fluffy, rich, and creamy with a delicious golden brown parmesan cheese topping. They make the perfect side dish for special occasions, holidays, or dinner parties.
"I served these at Christmas and they were the highlight. Everyone could not stop raving! I followed the recipe exactly and at the end I found it was too much butter but how is too much butter ever a bad thing right? Ha! Thank you for sharing, this is going in my file for holiday meals for many years to come!"
★★★★★-Erin
Mashed potatoes are a delicious side for any comfort meal.
What makes this mashed potatoes recipe special is that it mixes in butter, grated parmesan, heavy cream, sour cream, and green onions.
Then the potato mixture is baked in the oven to form a buttery, golden brown parmesan crust.
The texture and flavor combination is incredible. The result is the BEST MASHED POTATOES ever!!! I hope you love them as much as we do. Enjoy! Xoxo -Katie.
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Ingredient notes and substitutions
You will need the following ingredients for oven baked creamy mashed potatoes:
- shredded parmesan cheese- I like the shredded parmesan cheese mixed in the mashed potatoes because of the texture it creates when it melts into the potatoes.
- grated parmesan cheese- The grated parmesan cheese makes the perfect texture for the crust topping.
- Russet potatoes- I use Russet potatoes in this recipe for the high starch content. They whip up fluffy and light. Yukon Gold potatoes are a good substitute.
- sour cream
- butter
- heavy cream-You can substitute with whole milk.
- green onions- The green onions add a nice flavor without overpowering the potatoes. You can substitute with chives or omit.
Parmesan Cheese Tip
I like using both the shredded parmesan and grated parmesan in this recipe. Shredded parmesan contains moisture and the cheesy strands melts slower creating a rich, fluffy, binding texture. The grated parmesan is dry and melts fast creating a crispy beautiful crust. For optimal results, use both cheeses. If you only want to use one type of parmesan, I would use the grated because the crust really makes this dish special.
Steps to make baked mashed potatoes
Follow these simple steps to make baked mashed potatoes:
- Peel potatoes. Cut into similar sizes. Add potatoes to boiling water and cook until fork tender. ( About 15 minutes.)
- Remove from heat and strain water. Add in butter and mash potatoes with a potato masher or electric mixer.
- Mix in heavy cream, sour cream, shredded parmesan, and green onions (Reserving 2 tablespoons of green onions to the side). Salt and pepper to taste.
- Pour mashed potatoes into a greased 9 x 13 baking dish.
- Slice remaining butter and add butter slices on top of the mashed potatoes.
- Layer grated parmesan over butter and potatoes. Bake at 350 degrees uncovered for 20 minutes.
- Turn on broiler setting and broil 2 to 4 minutes. Watch the entire time looking for a golden brown.
- Remove from oven and add additional green onions. Rest for 5 minutes before serving.
Watch how to make
Can you make ahead mashed potatoes?
You can make ahead the mashed potatoes. Follow the instructions to make the mashed potatoes. Then cover and refrigerate. When ready to serve, cover with butter and parmesan cheese topping. Then bake uncovered 30 to 35 minutes.Broil the topping the last 2 to minutes.
About the recipe
This recipe was inspired by the popular Fouchy Potato recipe on TikTok by Courtney Townsend @Courtneyloucooks. Her recipe looked so good, I had to try it. It completely lived up to my expectations. I mean: butter, cream, cheese, potatoes..... what can go wrong here?
I did make a few changes to the recipe. It has now become one of my favorite mashed potato recipe and I absolutely love to serve it when I have guests over.
Like this recipe? Then also try some of these:
Please leave me a comment below if you make this baked mashed potatoes casserole and tell me what you thought about it. I would love to hear back, and so would my readers.
Also post your picture of your potatoes on Instagram or Facebook, and tag @aforkstale with #aforkstale hashtags! I will share with my followers! xoxo!
📖 Recipe
Oven Baked Mashed Potatoes with Parmesan Cheese
Equipment
- 9 x 13 baking dish
Ingredients
Mashed Potatoes
- 3 pounds Russet potatoes 4-5 large Russet potatoes
- ¾ cup butter 1 ½ sticks of butter
- 1 cup shredded parmesan
- 1 cup heavy cream
- ¼ cup sour cream
- 5 green onions sliced thinly
Crust Topping
- ¼ cup butter ½ stick of butter
- 1 cup grated parmesan
Instructions
- Peel russet potatoes. Cut into similar sizes. Add potatoes to boiling water and cook until fork tender. ( About 15 minutes.)3 pounds Russet potatoes
- Remove from heat and strain water. Add in butter and mash potatoes.¾ cup butter
- Mix in heavy cream, sour cream, shredded parmesan, and green onions (reserving 1 tablespoon of green onions to the side). Salt and pepper to taste.1 cup shredded parmesan, 1 cup heavy cream, 5 green onions, ¼ cup sour cream
- Pour mashed potatoes into a greased 9 x 13 baking dish.
- Slice remaining butter and add butter slices on top of the mashed potatoes.¼ cup butter
- Layer grated parmesan over butter and potatoes. Bake at 350 degrees uncovered for 20 minutes.1 cup grated parmesan
- Turn on broiler setting and broil 2 to 4 minutes. Watch the entire time looking for a golden brown.
- Remove from oven and add remaining green onions. Rest for 5 minutes before serving.
Cheryl says
What is the maximum numbers of days you can make these ahead? Thank you!
Katie Crenshaw says
Hi Cheryl. You can make the mashed potatoes up to 2 days in advance.
Erin says
I served these at Christmas and they were the highlight. Everyone could not stop raving! I followed the recipe exactly and at the end I found it was too much butter but how is too much butter ever a bad thing right? Ha! Thank you for sharing, this is going in my file for holiday meals for many years to come!
Laura says
What a delicious bake dish with simple ingredients. We loved this recipe, thanks a lot!
anna says
Love that you're recipe uses shredded parmesan as well as grated parmesan! It came out perfect, so delicious, especially with that cheesy crust on top!
Isabelle says
We're suckers for any type of potato recipe. This one was so good, especially with the crispy topping. It was like eating baked mac and cheese, just a little bit better for you.
Kristina says
These were a delicious alternative to stovetop mashed potatoes. Baking them in a big foil tin made it easy to store them for Thanksgiving later this week and will make reheating really easy too.
Cathleen says
There is nothing I love more than mashed potatoes, so I am SO excited to make this!! Thank you so much for the recipe 🙂
Mikayla says
Christmas movie day with friends and we have a potluck with it, I thought these would be a nice change. Everyone raved about them!
Amy Liu Dong says
We loved mashed potatoes, and this one looks delicious. I am so excited to make this at home.
Jamie says
This baked mashed potatoes recipe is just so perfect for this Holiday season! Looks definitely so yummy! Kids will surely love it!
Erin says
I used Pecorino Romano and these potatoes were amazing! Will definitely make these potatoes for Thanksgiving! I know everyone will love them.
Megan Ellam says
Seriously the best way to make mash. Thanks for a great recipe.
Lauren Michael Harris says
I don't think I've ever baked mashed potatoes like this, but will definitely be doing it more often now! These are amazing!!
Ann says
These mashed potatoes have my mouth watering! These are my kind of mashed potatoes - excited to give this recipe a try!