How To Cook Costco Mashed Potatoes – Hungarian Chef

Last Updated on November 23, 2023

If you’ve ever been to Costco, then you know how delicious their mashed potatoes are. They’re creamy, flavorful, and the perfect side dish for just about any meal. 

But did you know that you can make your own Costco mashed potatoes right at home? In this blog post, we’ll show you how to cook Costco mashed potatoes so you can enjoy them any time you want!

What is Costco mashed potatoes?

Costco, commonly referred to as Costco Wholesale Corporation, is a global multinational enterprise overseeing a chain of membership-exclusive retail stores featuring large warehouse club formats. 

One of their popular item is Mashed potatoes. It is a classic side dish that are easy to make and incredibly versatile. They’re made by mashing boiled potatoes with butter, milk, and other seasonings until they’re creamy and fluffy. 

Costco mashed potatoes are made with the same ingredients, but they’re given an extra special touch with the addition of garlic and onion powders. They also usually include a bit of sour cream for an extra creamy texture.

Why you’ll love this Costco mashed potatoes recipe?

Costco mashed potatoes are the perfect side dish for any meal. They’re creamy and flavorful, and they pair well with just about anything. Plus, they’re easy to make and require minimal ingredients. And the best part is you can make them right at home!

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The Ingredients

• 2 Pounds of Russet or Yukon Gold Potatoes (handpicked for optimal freshness): The choice of potatoes, whether Russet or Yukon Gold, influences the texture and flavor of the mashed potatoes. These varieties are known for their starchy content, resulting in a creamy and fluffy mashed consistency.
• 0.5 Gallon of Creamy Whole Milk: Whole milk adds creaminess and moisture to the mashed potatoes. The fat content in whole milk contributes to the luscious and smooth consistency of the dish.
• 0.25 Teaspoon of Freshly Ground Black Pepper: Freshly ground black pepper adds a warm and slightly spicy flavor, enhancing the overall taste of the mashed potatoes. The pepper also provides a subtle contrast to the richness of the butter and cream.
• 4 Generous Sticks (16 tablespoons) of High-Quality Butter: Butter is a key ingredient in mashed potatoes, providing richness, flavor, and a velvety texture. High-quality butter contributes to the overall taste and indulgence of the dish.
• 1 Teaspoon of Finely Harvested Sea Salt: Sea salt enhances the natural flavors of the potatoes and balances the richness of the butter and milk. It is essential for bringing out the savory elements in the dish.
• Optional: A Sprinkle of Freshly Chopped Chives or Vibrant Parsley for an Artful Garnish: Freshly chopped chives or parsley add a pop of color and a hint of freshness to the mashed potatoes. This optional garnish not only enhances the visual appeal but also introduces additional flavor notes to the dish.

Directions

Step 1: Prepare the Potatoes:

Wash, peel (if desired), and cut the potatoes into evenly sized chunks. Ensuring uniform size promotes even cooking.

Step 2: Boil the Potatoes:

Place the potato chunks in a large pot and cover them with cold water. Bring the water to a boil, then reduce the heat to simmer. Cook until the potatoes are fork-tender, typically around 15-20 minutes.

Step 3: Heat the Milk and Butter:

While the potatoes are cooking, in a separate saucepan, heat the creamy whole milk and butter over low heat until the butter is fully melted. Keep the mixture warm.

Step 4: Drain and Mash:

Once the potatoes are tender, drain them thoroughly and return them to the pot. Mash the potatoes using a potato masher or a ricer until smooth and free of lumps.

Step 5: Incorporate the Milk and Butter:

Gradually pour the warm milk and melted butter mixture into the mashed potatoes. Stir gently as you pour to incorporate the liquids evenly.

Step 6: Season the Mashed Potatoes:

Add finely harvested sea salt and freshly ground black pepper to the mashed potatoes. Adjust the seasoning according to your taste.

Step 7: Whip to Perfection:

Use an electric mixer or a sturdy spoon to whip the mashed potatoes, ensuring they become light, fluffy, and well combined.

Step 8: Optional Garnish:

If desired, sprinkle freshly chopped chives or vibrant parsley over the mashed potatoes for an artful garnish.

Step 9: Serve Warm:

Transfer the mashed potatoes to a serving dish and serve them warm.

Step 10: Enjoy:

These Costco-style mashed potatoes are creamy, rich, and indulgent. Serve them alongside your favorite main dishes and savor the comfort of this classic side.

Notes

• Make sure to use starchy potatoes like Russet or Yukon Gold, as they will give you the best results.

• Use cold water when boiling the potatoes, as this will help them cook evenly.

• Use a potato masher or electric mixer to get the perfect texture for your mashed potatoes.

• Don’t forget the salt and pepper! This will give your mashed potatoes an extra kick of flavor.

• If you don’t have sour cream, you can use plain Greek yogurt instead.

• If you want to give your mashed potatoes an extra boost of flavor, add a tablespoon of chopped fresh herbs like parsley or chives.

Storage Tips

Mashed potatoes can be stored in an airtight container in the refrigerator for up to three days. To reheat, place the potatoes in a microwave-safe bowl and heat for 1-2 minutes, or until warmed through.

Nutrition Information

Serving Size: 1/2 cup
Calories: 280
Total Fat: 10 g
Saturated Fat: 6 g
Cholesterol: 32 mg
Sodium: 176 mg
Total Carbohydrates: 28 g
Dietary Fiber: 4 g
Sugar: 4 g
Protein: 6 g

Serving Suggestions

• Serve the mashed potatoes alongside roasted chicken, steak, or fish.

• Top the mashed potatoes with shredded cheese and bake in the oven for a delicious potato gratin.

• Add cooked bacon, chives, or caramelized onions for an extra flavor boost.

• Use mashed potatoes as a base for shepherd’s pie.

• Serve mashed potatoes with a side of roasted vegetables.

• Top mashed potatoes with gravy for an extra special side dish.

What other substitute can I use in costco mashed potatoes?

• If you don’t have garlic powder, you can use fresh garlic instead. Mince the garlic and add it to the potatoes with the butter, milk, and seasonings.

• If you don’t have onion powder, you can use fresh onion instead. Dice the onion and sauté it in a pan until it’s softened. Then, add it to the mashed potatoes with the other ingredients.

• If you don’t have sour cream, you can use plain Greek yogurt instead.

• If you don’t have butter, you can use olive oil instead.

• If you’d like to make healthier mashed potatoes, use skim milk instead of whole milk.

• If you’d like to add a bit of sweetness, add a tablespoon of honey or maple syrup.

Frequently Asked Questions

How do I know when the potatoes are done cooking?

A. The potatoes are done cooking when they are fork-tender. This means that when you insert a fork into the potato, it should be soft and easy to pierce.

What other seasonings can I add to the mashed potatoes?

You can add any herbs or spices that you like. Some popular choices include parsley, chives, oregano, thyme, rosemary, and chili flakes.

Can I use a food processor to mash the potatoes?

Yes, you can use a food processor to mash the potatoes. However, it’s important to be careful not to over-process them, as this can make them gummy.

Can I add cream cheese to the mashed potatoes?

Yes, you can add cream cheese to the mashed potatoes. Doing so will add an extra creamy texture and a bit of tanginess.

Can I make mashed potatoes ahead of time?

Yes, you can make mashed potatoes ahead of time. Simply prepare the potatoes as directed, let them cool, and then store them in an airtight container in the refrigerator.

How do I reheat mashed potatoes?

To reheat mashed potatoes, place them in a microwave-safe bowl and heat for 1-2 minutes, or until warmed through.

Conclusion

Making Costco mashed potatoes at home is easy and delicious. With just a few simple ingredients, you can enjoy this classic side dish any time you want. And if you’re feeling adventurous, you can always add your own unique twist to the recipe. 

So, the next time you’re in the mood for some mashed potatoes, why not give this recipe a try.

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