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Premade Real Mashed Potatoes at Costco

Mashed Potatoes at Costco - Yukon Gold - Thanksgiving and Christmas.

Back for a Thanksgiving cameo at my house, the Kirkland Signature deli pre-made real mashed potatoes at Costco are now in stores. These are extra large sized to feed a crowd – or see below for some of my serving ideas to use all of these up! A fall favorite, and holiday meal essential…these are REAL mashed potatoes without all the peeling, and boiling and mashing and seasoning…you just heat and serve!

I remove them from the packaging and microwave them. You can also move them into a baking dish and bake them to warm them up. Either way, these deli mashed potatoes from Costco are fully cooked, so do whatever is easier for you on the big day!

mashed potatoes at costco
Pre-made yukon gold mashed potatoes at Costco are back in store for Thanksgiving 2023.

Why I like the Costco Mashed Potatoes

I’ve said it before and I’ll say it again…when hosting a large meal we all have to outsource some. In my opinion, peeling, boiling and mashing potatoes is pretty basic stuff. I can always add a little dash of this or that to these, but by shortcutting the whole process I save a lot of time and mess in my kitchen on a busy day.

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Do I love that they have potassium sorbate? No. But for one side for one meal, I’ll accept it. It’s not an ingredient you’ll find in most food I choose, but on occasion, I’m okay with it.

I honestly can’t say that if I made mine homemade they’d taste any different. These are good, and I definitely recommend these as an item to outsource and just buy pre-made! I buy them and serve them at my Thanksgiving every year.


Yukon gold potatoes, whole milk, butter (cream and ore milk, salt), salt, potassium sorbate (preservative), spices, parsley.

Costco Price & Item Number

Yukon Gold mashed potatoes are Costco item number 14265 and cost $1.99 per pound. It’ll cost around $10 per package, give or take a buck or two.

These have not increased in price for 2023, one more inflation-proof Costco essential Thanksgiving meal essential!

Heating Instructions for Costco Mashed Potatoes

Kirkland Signature Yukon Gold Mashed Potatoes for Thanksgiving and Christmas. Heating Directions.
Yield: varies

Heating Instructions for Costco Mashed Potatoes

Cook Time: 50 minutes
Total Time: 50 minutes

It's quick and easy to heat up your Costco Yukon Gold premade mashed potatoes from the Deli. I always transfer mine to a ceramic baking dish and place them in the oven, but these are designed to be heated in their container if that's easier for you! Costco has swapped the container they come in from plastic (shown in pic) to an aluminum oven safe container - this may vary regionally so please check your packaging. Black plastic is microwavable, and silver aluminum is ovenable. They will be one or the other, but not both.

Alternatively, you can pop them into a microwave safe dish, and microwave for about 8 minutes, stop and stir them, then microwave another 8 minutes. Adjust a little lower if not heating the entire package. The aluminum dish they come in is ovenable but NOT microwaveable.


  • 1 Container of Kirkland Signature Yukon Gold Mashed Potatoes from Costco, Approx 5 lbs


  1. Preheat oven to 350F.
  2. Remove Cover and place on a baking sheet.
  3. Bake 50-60 minutes or until internal temp reaches 165F.
  4. Stir and serve. Recommend transfering to a serving dish, container will be very hot.


These can also be microwaved. To reheat them for leftoevers, we recommend microwaving. Smaller portions (ie leftovers) should be microwaved for shorter periods than the above instructions for the entire package - use your discretion 🙂

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 240Total Fat: 16gSaturated Fat: 10gTrans Fat: 0gCholesterol: 40mgSodium: 580mgCarbohydrates: 23gFiber: 2gSugar: 1gProtein: 3g

Where to Find Mashed Potatoes at Costco

You can find the Kirkland Signature Deli Yukon Gold mashed potato clam shells in the open refrigerated cases in the deli area.

Note: these are only available around the holidays.

Costco Pre-Made Yukon Gold Mashed Potatoes for Thanksgiving
Fresh real mashed potatoes from the Costco Deli

Do you buy these pre-made mashed potatoes from Costco? What do you think, do you recommend them? How do you heat them up?

Serving Ideas

Beyond their intended Thanksgiving dinner usage, there are tons of great meals that go well with mashed potatoes. So if you’re wondering how to use this giant flat of mashed potatoes, we’ve got some ideas!

Pair it with any of the following to round off your meal (well, maybe add some veggies too!)

Doctor it up, and make plain mashed potatoes into more flavorful mashed potatoes!

  • Add roasted garlic to make garlic mashed potatoes
  • Add pieces of lobster to make Lobster mashed potatoes
  • Add pieces of king crab to make crab mashed potatoes
  • Layer it with hamburger and corn for shepherd’s pie

Or check out these recipes to use up leftover mashed potatoes!

More posts on holiday meal finds including turkey, ham, king crab, and more to read next:

All opinions expressed on CostContessa are our own. Product features and nutrition information provided on our site is provided to us by third parties, and we do not independently verify its accuracy. Consumers should verify all information. Our content is not intended as a substitute for medical counseling or reading packaging yourself. Please always see actual package information yourself (it can and does change!) and consult your doctor with all questions.

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