When creating a memorable Thanksgiving feast that’s convenient and delicious, look no further than Costco for Thanksgiving Sides. As the season of gratitude and gatherings approaches, many turn to the warehouse for a helping hand in assembling a culinary masterpiece. 

The retail giant has become synonymous with simplifying Thanksgiving dinner preparation. In addition to offering excellent prices on the centerpiece turkey, Costco offers an impressive array of side dishes that save you precious time and deliver on taste and quality.

As a 20 year Costco shopper and avid home cook, here are the Thanksgiving side dishes from Costco we reccomend. Many of these have earned a permanent spot in our holiday menu.

🦃 Key Takeaways

• Convenience meets quality: Costco Thanksgiving sides are easy to prepare, delicious, and perfect for feeding a crowd.
• Mix and match: Combine fresh produce, pre-made classics, and frozen favorites to create a full holiday spread.
• Time-saving tip: Many sides are ready in under 10 minutes — ideal when your oven and stovetop are already packed.
• Big portions = big value: Most packages serve 8–18 people, making Costco a cost-effective way to host Thanksgiving dinner.

Costco Thanksgiving Side Dishes

Costco Mashed Potatoes

Main Street Potatoes, available at Costco, are an excellent choice for a Thanksgiving side dish. These convenient potatoes are perfect for busy holiday preparations, requiring just 7 minutes to cook with zero prep time. While they may not entirely replicate traditional mashed potatoes’ rich, homemade flavor, they are undeniably tasty, making them a satisfying and time-saving option for your Thanksgiving meal.

A quick stir at the halfway point is all that’s needed to ensure even cooking. Each container contains approximately 7.5 cups of potatoes, making it ideal for serving a gathering of around seven people. .

Main Street Mashed Potatoes — $7.99 for four pounds

Pro Tip: Mix in a spoonful of sour cream and a sprinkle of garlic salt after heating to make these taste homemade in seconds.

Panera Autumn Squash Soup

Enhance your Thanksgiving dinner with Panera Autumn Squash Soup, a delicious option that perfectly embodies the season’s essence. Costco offers it in two 24-ounce containers, and when you serve it in 3/4-cup portions, you have enough for eight people. This soup is convenient because it’s ready to heat and enjoy, sparing you the need to occupy valuable oven or stovetop space during the holiday rush.

Panera Autumn Squash Soup — $10.99 for 3 pounds

Serving Idea: Garnish each bowl with a drizzle of heavy cream and a few roasted pumpkin seeds for a restaurant-worthy presentation.

Costco Idahoan Instant Mashed Potatoes

If you don’t want to peel potatoes and wait for them to boil, use a shortcut with Costco Idahoan Instant Mashed Potatoes. All that’s needed is to add boiling water and boom! Mashed potatoes on the table. Each three-pound box contains 12 pouches, enough to feed 48 people. The benefit these have over the Main Street Mashed Potatoes is the ability to add more liquid to create a creamier dish. 

Idahoan Mashed Potatoes — $12.69 for 3 pounds

Pro Tip: Replace part of the boiling water with warm milk and butter for a richer, creamier flavor that rivals homemade.

Costco Scalloped Potatoes

Main Street Bistro Scalloped Potatoes from Costco are the ultimate Thanksgiving sidekick! Skip the hours of prep and baking—just heat, serve, and enjoy! While they’re tasty on their own, we have a few tips to make them even more delicious. Check out our full review for easy upgrades to wow your guests. With a two-and-a-half-pound package, plenty to go around—it serves about ten.

Main Street Bistro Scalloped Potatoes — $7.89 for 2.5 pounds

Serving Idea: Add some chopped ham to boost the flavor.

Costco Stuffing

Pepperidge Farm Stuffing, available at Costco, is a Thanksgiving staple that remains a cherished choice for many families. This classic stuffing mix offers a delectable taste and the convenience of serving a large gathering, with one box generously feeding up to 18 people.

For those who have relied on Pepperidge Farm for generations, this stuffing represents a time-tested tradition that’s hard to beat. Notably, it’s also the version Food and Wine magazine recommended. With its rich flavor and proven track record, Pepperidge Farm Stuffing is a reliable and delicious addition to any Thanksgiving feast, making it an ideal side dish.

Pepperidge Farms Herb Seasoned Stuffing — $8.99 for 48 ounces

Pro Tip: Add sautéed onions, celery, and a handful of chopped apples or cranberries for a homemade upgrade that takes just minutes.

Costco Crescent Rolls

Pillsbury Crescent Rolls have been a staple on Thanksgiving tables for years. While prices rise due to overall inflation and dairy prices, Costco has them for a steal. They are a quick, easy, crowd-pleasing Costco Thanksgiving Side worthy of a spot on your table.

Pillsbury Crescent Rolls — $9.99 for five 8-ounce cans

Serving Idea: Brush the baked rolls with melted butter and sprinkle a little sea salt or everything bagel seasoning on top before serving.

Costco Cornbread

If crescent rolls aren’t your thing, but you still want some bread, try Krusteaz Honey Cornbread. We’ve made cornbread from scratch several times and have yet to find a recipe that competes with this mix. It’s flaky and contains just the right amount of sweetness. Each box contains six pouches, yielding 12 muffins.

Krusteaz Honey Cornbread Mix — $6.99 for six packets

Pro Tip: Make the honey butter recipe on the package to serve alongside. It’s the perfect complement.

Caesar Salad Kit

Greens can be fussy, but using a salad kit takes the guesswork out of the mix; you have enough to think about! We’ve reviewed every salad kit in the warehouse, and the Mediterranean Salad or Caesar from Costco would make a great Thanksgiving side. Everything you need, including toppings and dressing, is in the bag. 

Organic Caesar Salad Kit — $8.99 for 24 ounces

Serving Idea: Add crumbled bacon for an instant upgrade.

Costco Gravy

After you’ve made the turkey, you are tired. You don’t want to stand by the stove stirring much longer. One excellent shortcut is pre-made gravy, but not just any brand will do since most are gooey and flavorless. Enter Kevin’s Natural Turkey Gravy. This product is the perfect heat-and-eat Thanksgiving Side Dish. Each package contains two 24-ounce pouches, enough to serve 16 guests. 

Kevin’s Turkey Gravy — $9.99 for 3 pounds

Serving Idea: Add sauteed mushrooms for added depth of flavor.

Planning the Rest of Your Costco Thanksgiving Meal?

Once your sides are set, it’s time to plan the rest of the feast! Check out these helpful Costco guides:

🍽️ Costco Thanksgiving Appetizers – Quick, crowd-pleasing starters that save time.
🥔 Best Thanksgiving Food at Costco – Discover appetizers, entrees, and more.
🦃 Costco Turkey Guide – Everything to know about fresh and frozen turkeys at Costco.

🍁 Final Thoughts

From mashed potatoes to gravy, Costco Thanksgiving Sides make hosting easier and more affordable than ever. Whether you’re cooking for a crowd or keeping it small, these easy options let you focus on what matters most — family, friends, and good food.

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