This post is sponsored by ALDI. These french onion mashed potatoes are such a fun twist on the original! Perfect caramelized onions and melty gruyere cheese – it’s like a bowl of french onion soup meets mashed potatoes!

Mashed potato lovers unite!

french onion mashed potatoes

These French onion mashed potatoes are a ridiculously flavorful spin on the classic and will be a hit on your Thanksgiving table. Volunteer to bring the potatoes. I promise you won’t regret it! 

caramelized onions

Today, we have recipe #2 in my Thanksgiving series! All week, I’m showing you how you can create a fantastic Thanksgiving spread with ALDI. They are your one stop show where you can get all the ingredients for our Thanksgiving menu this week! 

Yesterday, I shared the incredible stuffed acorn squash dish. Last year, I made this wonderful citrus butter turkey with ingredients from ALDI. And if you’re feeling some gravy for these mashed potatoes, you can make my mom’s famous gravy with your turkey drippings! 

mashed potatoes with gruyere cheese

Yes, over the last two years you guys know that I have managed to French onion all the things. Oh, we’re making it a verb. I’ve done French onion lasagna rollups, French onion meatballs, French onion stuffed shells, French onion stuffed sweet potatoes and French onion scalloped potatoes.

OH YES.

So therefore, it’s time for… French onion mashed potatoes!!

french onion mashed potatoes in a pot

I can barely contain my excitement for these. They are such a fun twist on the traditional mashed potatoes. 

I take my best ever mashed potato recipe – the how sweet eats house mashed potatoes! – and add caramelized onions and freshly grated gruyere cheese. It’s like your mashed potatoes just got drizzled with some French onion soup and the flavor is incredible.

french onion mashed potatoes

Another thing I love about these is that they don’t venture too far off the traditional path of Thanksgiving dishes. Sure, they aren’t plain mashed potatoes. But all they have is a little cheese and caramelized onions, which let’s be real – makes absolutely everything better! 

While these add so much to your Thanksgiving table, they would also make an excellent weeknight side dish. These flavors majorly fancy up the mashed potatoes. If you do some basic grilled chicken and vegetables, but have these potatoes on the side? You’re killing it! 

french onion mashed potatoes

Here’s what you need to make the French onion mashed potatoes happen:

  • Yukon gold potatoes. These golden potatoes make the best mashed potatoes, in my opinion. I get mine at ALDI. They result in super creamy and light potatoes!
  • Sweet onions. Make sure to grab a bunch! Onions cook down like crazy when you caramelize them. You want to have enough to stir into the potatoes as well as for the top of the potatoes.
  • I love to use the Emporium Selection Le Gruyere Cheese. It gets so super melty in the potatoes and brings a lot of that traditional swiss cheese flavor to the dish.
  • As expected, you need some butter, cream, salt and pepper to bring the dish together. But that’s it! I like to use the Simply Nature Organic Butter and the Friendly Farms Heavy Whipping Cream from ALDI. These delicious potatoes can come together SO fast with just a few ingredients.

french onion mashed potatoes

A few of my classic mashed potato secrets apply here. Don’t cut your potato chunks too small. Don’t over boil your potatoes! Be sure to add warm cream and butter, so the potatoes stay creamy and light. And certainly don’t overwhip your potatoes, or else they will turn into glue. 

I definitely feel like a potato connoisseur considering potatoes were my favorite food when I was a kid! From the time I was small well into my teen years, potatoes reigned supreme. I’d take them any and every way. So I know my potatoes.

french onion mashed potatoes

These French onion mashed potatoes are so, so good. Such a fabulous addition to your table!

french onion mashed potatoes

French Onion Mashed Potatoes

French Onion Mashed Potatoes

5 from 24 votes
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Ingredients

caramelized onions

  • 6 tablespoons Simply Nature Organic Unsalted Butter
  • 4 sweet onions, thinly sliced
  • kosher salt

potatoes

  • 5 pounds russet or yukon gold potatoes, washed and peeled
  • 12 tablespoons Simply Nature Organic Unsalted Butter
  • 1 ½ cups Friendly Farms Heavy Whipping Cream
  • 8 ounces Emporium Selection Le Gruyere Cheese, freshly grated
  • 1 to 2 teaspoons salt
  • freshly ground black pepper

Instructions 

caramelized onions

  • Heat the butter in a skillet over medium-low heat. Add the onions with a big pinch of salt. Cook for 10 minutes, stirring often, so the onions begin to cook down. After 10 to 15 minutes, reduce the heat to low. Continue to cook, stirring occasionally, until the onions are golden and caramelly, about 45 to 60 more minutes. Continue to cook until your desired caramelization is reached.

potatoes

  • Note: to prep these ahead of time, wash, peel and chop your potatoes. Place them in a large bowl and cover them with cold ice water. Store them in the fridge for 12 to 18 hours before preparing.
  • Slice the potatoes in half or in quarters, depending on the size. You want the potato chunks to all roughly be the same size and not too small.
  • Place the potatoes in a large pot of cold water over medium heat. Season the water with a big pinch of salt. Bring the potatoes to a boil, then boil until they are fork tender, about 12 to 15 minutes. (If your potato chunks are smaller, check after 10 minutes.)
  • While the potatoes are boiling, heat the butter and cream in a saucepan over medium-low heat until the mixture is warmed through.
  • Drain the potatoes well and place them back in the pot. Use a potato masher or ricer to begin mashing the potatoes into the consistency you enjoy. Mash in half of the butter and cream mixture and 1 teaspoon salt. At this point, if you want to use a hand mixer, now is the time. You don’t want to over mix! Keep it on low speed and move it around the bowl constantly, just for a minute or two, breaking up any larger chunks that didn’t mash. Stir in the rest of the milk and butter mixture. Stir in the gruyere cheese. Mix slowly, allowing the cheese to melt. Stir in half of the caramelized onions. Taste and season the potatoes with more salt if needed. Taste frequently so you can get an idea of how much salt to add!
  • Serve the potatoes with the rest of the caramelized onions on top.
  • To serve 4: Cut this recipe in half exactly. Taste and season with more salt if necessary.
  • To serve 12 to 16: Double this recipe exactly, but taste after 2 teaspoons of salt have been added. Continue to mash and taste and season until your desired flavor is reached.
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french onion mashed potatoes

Dreamy!