Costco Scalloped Potatoes Review – Main Street Bistro

In the vast aisles of Costco, you’ll find an array of delicious and convenient food products that cater to busy families and foodies alike. On a recent visit, the Scalloped Potatoes from Main Street Bistro caught my eye and had me intrigued.

scalloped potatoes costco

Main Street Bistro’s Scalloped Potatoes are presented as an inviting and fuss-free side dish. If you’re someone, like me, who hasn’t indulged in scalloped potatoes for a while, this product is a compelling invitation back into that world.

This article dives into the taste, nutritional content, cooking instructions, and overall value of these scalloped potatoes.

Costco Scalloped Potatoes

scalloped potatoes costco
costco scalloped potatoes
  • Item Number: 577943
  • Price: $7.39 USD for 40 Ounces
  • Servings: Roughly for 8 people
  • Manufacturer: Main Street Bistro

Costco Scalloped Potatoes Ingredients

  • Potatoes: Serving as the base for this dish.
  • Dairy Products:
  • Whole Milk: A rich liquid base.
  • Cheddar Cheese: Made from pasteurized milk, cheese cultures, salt, enzymes, and colored with annatto extract. Also contains natamycin as a mold inhibitor.
  • Heavy Cream: A blend of cream and fat-free milk.
  • Butter: Comprised of sweet cream from milk with a hint of salt.
  • Sour Cream: Formulated with pasteurized cultured cream from milk and enzymes.
  • Parmesan Cheese: Produced from pasteurized part-skim milk, combined with cheese culture, salt, and enzymes.
  • Romano Cheese: Made from pasteurized part-skim cow’s milk, cheese culture, salt, and enzymes.
  • Thickeners & Seasonings:
  • Modified Corn Starch: To provide a consistent texture.
  • Salt: For taste.
  • Onion Powder: To add depth of flavor.
  • Dextrose: A type of sugar.
  • Black Pepper: For a touch of heat.
  • Preservatives:
  • Nisin Preparation: A mixture of salt and nisin, a natural antimicrobial.

Read: 10 Best Costco Appetizers 

Costco Scalloped Potatoes Taste and Texture

Once out of the oven, the first bite was heavenly. These scalloped potatoes struck a perfect balance between creamy and cheesy.

The potatoes were thick, drenched in a deliciously creamy sauce. The cheese was not overpowering but instead complemented the dish perfectly, with a generous layer on top.

Nutrition and Serving Scalloped Potatoes at Costco

Each serving, measuring approximately ⅔ cups, contains 230 calories. But as with all delicacies, moderation is the key. Scalloped potatoes are not exactly a low-cal diet’s best friend, but their rich and creamy texture and taste are worth every calorie.

Costco Scalloped Potatoes Cooking Instructions

For those curious about the best way to savor these potatoes, there are options to heat them in the microwave or oven. I went with the oven method:

  1. Unpack the tray from its packaging.
  2. Remove the clear plastic film from the black plastic tray.
  3. Position the tray on a baking sheet.
  4. Bake in a preheated oven at 350 F for 25 minutes.
  5. Check for doneness and serve.

Costco Scalloped Potatoes Directions

Microwave Method:

  1. Unpack the tray and discard the protective film.
  2. Microwave on high for 7-8 minutes, ensuring the contents are thoroughly heated. If your microwave doesn’t have a rotating platform, first heat for 4 minutes, then manually turn the tray half a rotation, and continue heating for another 3-4 minutes.
  3. Once done, let the dish sit for a minute before serving. Note that microwave efficiencies differ; adjust heating durations as required. Please be cautious: Both the dish and its container will be very hot.

Conventional Oven Method:

  1. Begin by preheating your oven to 350°F.
  2. Extract the tray from its packaging and peel off the film.
  3. Position the tray on a baking sheet and slide it into the oven. Let it bake for 20-25 minutes, or until fully heated through. Again, handle with care: The dish and its container will be hot.

Additional Notes:

  • Refrain from using a toaster oven for preparation.
  • Please avoid broiling the product.

Storage Guidelines

A noteworthy point is that these potatoes should not be frozen. While they never arrive frozen, attempting to freeze and subsequently defrost them might compromise the texture and consistency of the sauce.

FAQs Regarding Costco Scalloped Potatoes


Main Street Bistro’s Scalloped Potatoes serve as a splendid side dish for those looking for convenience without sacrificing taste. Even as someone who tends to favor other potato dishes like mashed or baked, these scalloped potatoes from Costco genuinely impressed me.

For those scouting Costco for other side dish options, keep an eye out for delights like the Kirkland Signature Mac and Cheese or the Stonemill Kitchens Homestyle Red Potato Salad.

Whether you’re a dedicated scalloped potato lover or a skeptic like me, this dish is worth trying on your next Costco run!

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