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Box of Reser's Mashed Potatoes
Bowl of Reser's Mashed Potatoes with Parmesan cheese added
Container of Reser's Mashed Potatoes
Adding cheese to Reser's Mashed Potatoes

We tried some of the Main St. Bistro Mashed Potatoes from Costco one time and have been buying them ever since. These potatoes are neither lumpy nor mushy, but they are nice and creamy. They are especially delicious with Parmesan cheese added in. We sometimes freeze a package so it lasts longer (even though it says keep refrigerated), and it still tastes just as good.

This is how we usually cook the refrigerated mashed potatoes (both 26 oz boxes):

  • Warm up one of the mashed potatoes boxes in the microwave for 3 minutes
  • Put the mashed potatoes from first box into a bowl
  • Fold in shredded Parmesan cheese to taste while it's still warm (we usually use enough Parmesan cheese so that it covers the top of the potatoes)
  • Warm up the second box of mashed potatoes in microwave for 2 minutes
  • Add the mashed potatoes from the second box into the bowl
  • Fold in more shredded Parmesan cheese to taste
  • Let the bowl of mashed potatoes sit in the refrigerator overnight
  • The next day (or same day) -- put the bowl of mashed potatoes in the oven (325 degrees F) for 45 minutes to 1 hour... and enjoy!
  • As a side note the easiest way to make these mashed potatoes is just following the microwave instructions on the box. It takes less than 10 minutes, and they still taste good.

    Overall Rating:
    Good
    Food: Reser's Main St. Bistro Mashed Potatoes
    Source: Costco, Tucson, AZ
    Price: $5.99 for twin pack (two 26oz boxes)
    Rating: Good

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    2 Comments

    REVIEW – Reser’s Main St. Bistro: Mashed Potatoes from Costco

    • Sue

      Thought these mash potatoes would be good. They were atrocious. How these pass as potatoes I have no idea. Far too salty and did not have the texture of potatoes. Better to make own and freeze ahead before entertaining if you can’t make the same day. Talk about causing high blood pressure. Should be removed from shelves.

    • Sue

      Does anyone know how to prepare the Main Street mashed potatoes in the crock pot?

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