This product comes from the Garden Grove, California location. Please note that each location carries different items so it may not be sold at your local Costco and some items are only sold for a limited time . Products also rotate throughout the year to make room for new products so items may no longer be sold at the time of your visit due to it being discontinued. Prices may also vary. Be sure to check with your local Costco for availability.
Disclaimer: This page is not in any way affiliated with Costco and all opinions are of my own.
Price as of 11/12/22
Below are some comments and reviews on this Main St Bistro Mashed Potatoes from other Costco members:
GOOD REVIEWS
“Delicious!!!”
“Add the Borsin cheese, it’s amazing!!”
“Oh no!!! These are soo good! I’m typically picky and wouldn’t grab already made mashed potatoes. I grab these every time I go on a Costco run. 
“They are definitely good!”
“We eat these all the time! I use them to make shepherd’s pie! Much easier and comparable to home made. Like others have said you can always add stuff to them”
“Not quite as good as Bob Evans but as others have said just dress them up a little and they are good”
“I thought they were good”
“Real good and freezes well”
“Love them We used them last year there just like home made’
“I usually add a bit of milk, butter, and garlic as I heat them on the stove”
“I’ve had these before. Not too bad. Add salt, pepper and tiny bit garlic salt. Then add two sticks of real butter pats all over. Bake covered with foil enough to just warm through.’
“We like them especially for an easy side dish”
“They are the real deal. Stir in some Boursin cheese. Yum”
“They are great! That’s what I got for our Thanksgiving dinner this year too!’
“They are good but I have to add a little extra butter and milk, salt”
“They’re pretty good! I usually add parsley and either black pepper or garlic pepper.”
“They are good!”
“Very good I use them all the time”
“I surprisingly loved them and I’m picky about my mashed potatoes!! I added extra butter and mixed them up until smooth after heating”
“I think they are pretty good…you can always doctor them up a little with more butter, milk and/or sour cream.”
‘They’re awesome!”
“I think they are good. Add some pepper and some extra butter.”
“They are excellent”
“They are great!’
“Me too. I add butter, spices, maybe a little parm cheese and bake in casserole dish. Ranch seasoning is good in them too. I never make mashed potatoes, always by these.”
“They r super good!!!”
“Great product.”
“Really good. I add butter the first go round- when done add little warm half/half”
“They are so good and seasoning is perfect!! I never make mashed potatoes from scratch anymore.”
“We like them’
“Love these, so awesome and you can add anything to it.”
“They are the best premade mashed I’ve had!”
“Oh so good! We buy this and Boursin cheese garlic one and mix one in each container! It’s about the most amazing thing ever”
“I use those all the time I add butter to them”
“They’re good in a pinch.”
“Add butter and half and half or milk and they’re very good”
“Love them. Add butter and salt & pepper. Put them into a beautiful bowl- no one will know the difference!”
“This is good, we added cream cheese to it.”
“They definitely are good”
“Super yummy!”
“So good. No ones gonna know”
“If you can’t make fresh, add butter and sour cream, if you have a mixer, WHIP IT UP. Oh and Salt! After all It is elastic pants day! 
“This is great. I just took one out of my freezer for dinner Thursday. I thaw, mix with cream and put in a baking dish, top with butter and bake in the oven. Everyone loves baked mashed potatoes and this saves me dishes to wash.”
“I love them. They are a tad salty though!”
“They’re great, that’s what I’m using this year!”
“My mom uses these all the time for thanksgiving they’re so good!”
“They were very good but the last time I bought them I found them a little too salty”
“They definitely need some dressing up, we add butter and sour cream. Salt and pepper if needed.”
“I’ve had these the way they are and they are good. Add a little heated whole milk with butter 
“ust an FYI, you can freeze your mashed potatoes. When defrosting just add a bit more milk. They come out just like you made it the first time. I do them in batches. The same with sweet potatoes. Just add the mini marshmallows at the very end.”
BAD REVIEWS
“Nasty. Tried couple weeks ago. Tossed em out 
“I think they need more butter!”
“Not a fan even with adding milk and butter.”
“Didn’t like them”
“We didn’t care for them”
“I didn’t really like them.”