The 5 Best Mushroom Buys At Costco Right Now (Including The $4.29 Organic Bulk Deal)

Costco’s produce aisle is famous for its bulk savings, and the mushroom section is no exception. As of December 2025, the warehouse giant continues to offer exceptional value on both fresh staples and hard-to-find specialty fungi, making it a crucial stop for home cooks, keto enthusiasts, and anyone looking to boost their nutrient intake.

The key to maximizing your savings and minimizing waste with Costco's bulk mushrooms lies in knowing the current deals and having a solid storage and recipe plan. We’ve done the deep dive to bring you the freshest pricing and a complete guide to the best mushroom products available right now.

Costco’s Current Mushroom Product Lineup and Pricing (2025)

Costco’s inventory is constantly rotating, but several core fresh and dried mushroom products remain staples, often offering significant savings compared to traditional grocery stores. The value proposition is particularly strong for organic varieties and specialty dried mixes.

• The Unseen Story Jessica Simpsons Battle For Privacy And Body Image In A Digital Age Mlvqa

• Organic Baby Bella Mushrooms (24 oz): This is arguably the most popular fresh mushroom deal. The 24-ounce container of organic Baby Bella (also known as Cremini) mushrooms is a consistent bulk buy. The most recently checked price range for this item is an incredible $4.29–$10.99, with an average price hovering around $5.68 for the large container.
• Organic Premium Large White Mushrooms (24 oz): Available in similar large containers, these are the classic button mushrooms, often found at Costco Business Centers but also in many standard warehouses.
• The Wild Mushroom Co. Dried Gourmet Mushroom Mix (454g): This specialty product has recently been highlighted as a new item, offering a high-quality mix of dried gourmet varieties. Dried mushrooms are excellent for adding deep, umami flavor to sauces and stocks.
• Northern Wild Dried Morel Mushrooms (1 lb.): A premium, dehydrated option for serious cooks. Morel mushrooms are highly prized, and buying them in bulk at Costco is a rare opportunity to save on this expensive fungi.
• Giorgia Organic Sliced Mushrooms (4 oz., 12-count): Perfect for quick-use scenarios or for smaller households, this multi-pack of pre-sliced organic mushrooms offers convenience and controlled portions.

The Essential Value of Costco’s Organic Baby Bella Deal

The 24 oz organic Baby Bella package is the benchmark for mushroom value at Costco. At an average price of under $6, you are paying significantly less per pound than you would for non-organic versions at most supermarkets. This affordability makes it easy to incorporate these nutrient-dense fungi into your diet regularly, whether for meal prepping or large family dinners.

Beyond the fresh produce, Costco also stocks prepared foods and supplements featuring fungi, showcasing the breadth of their "mushroom kingdom" offerings:

• CHAMPIGNON BRIE W/ MUSHROOM: A popular cheese product that integrates the flavor of mushrooms, last noted with an in-store price of $12.99 per pound.
• Nature's Lab Mushroom 7 (Supplement): A dietary supplement made with organic mushrooms, including seven different species, designed for immune and cognitive support. This product often receives excellent reviews for its value and quality.
• Mushroom Home Grow Kits: Periodically available, especially in Canadian warehouses, these kits allow members to grow their own fresh mushrooms at home.

Mastering Bulk Mushroom Storage and Quality

The biggest challenge with buying bulk mushrooms is preventing spoilage. Mushrooms have a high water content, and moisture is their enemy. Fortunately, Costco’s quality is generally regarded as excellent, with many members reporting the mushrooms are tasty and a great buy.

• Shania Twains Bold Statement Why The Star Chose Nude Photoshoots At 57 Qf9cg

To ensure your 24-ounce haul of Organic Baby Bellas or Organic Premium Large White Mushrooms stays fresh, follow these expert storage tips:

The Paper Bag Storage Trick

Do not keep your mushrooms in the original plastic-wrapped container, as this traps moisture and causes them to turn slimy faster. Instead:

1. Transfer the mushrooms to a large paper bag (like a lunch bag or a clean grocery bag).
2. For maximum longevity, layer the mushrooms inside the paper bag, separating each layer with a sheet of paper towel.
3. Fold the top of the bag loosely and store it in the main compartment of your refrigerator (not the crisper drawer, which can be too humid). This method allows the mushrooms to "breathe" while absorbing excess moisture, keeping them firm and fresh for longer.

Long-Term Preservation: Freezing and Dehydrating

If you know you won't use the entire bulk container within a week, long-term storage is essential. You can easily dehydrate fresh mushrooms, a great tip for preserving your Costco haul. Dehydrating them allows you to create your own gourmet mix for future use in stocks and soups, similar to the specialty dried packs Costco sells.

• The Surprise Vegas Wedding And Shared Grief 5 Shocking Details Of John Schneider And Dee Dee Sorvinos Whirlwind Romance Ohirf

Alternatively, you can sauté and freeze them. Simply slice and cook the mushrooms in butter or olive oil until all the moisture has evaporated, then let them cool and freeze them flat in a freezer-safe bag. This pre-cooked method is perfect for adding to future casseroles, pasta sauces, or pizzas.

Topical Authority: Specialty and Culinary Fungi at Costco

Costco is increasingly stocking a wider variety of specialty fungi, a testament to the growing demand for diverse culinary and health-focused mushrooms. While availability is regional and seasonal, you may find the following unique varieties:

• Exotic Fresh Varieties: Keep an eye out for fresh packs containing Black Oyster, King Oyster, Maitake (Hen of the Woods), Shiitake, Beech, and Enoki mushrooms. These are often sold in mixed packs or as seasonal specials.
• Dried Gourmet Mixes: The Wild Mushroom Co. mix is a fantastic way to introduce intense flavor. Dried mixes often contain Porcini, Chanterelles, and other potent fungi that are excellent for risotto or mushroom gravy.

Culinary Intent: Recipes for Your Bulk Costco Mushrooms

To ensure you use up your bulk purchase, here are three high-impact recipes that utilize the 24 oz of Baby Bella or White Mushrooms:

1. Classic Stuffed Mushrooms

This is a perfect appetizer or side dish. Use the largest mushroom caps from your Costco container. Fill them with a stuffing made from breadcrumbs, Parmesan cheese, herbs, and finely chopped mushroom stems. Bake them until the mushrooms are tender and the stuffing is golden brown.

2. Rich Mushroom Gravy

A hearty gravy is a fantastic way to use a large quantity of mushrooms. Sauté the mushrooms until golden brown, then stir in flour, tamari, and seasonings like garlic, thyme, and rosemary. Add broth and simmer until the gravy thickens. This freezes well and is perfect over mashed potatoes or steak.

3. Mushroom Sliders or Burgers

For a vegetarian main course, sauté your bulk mushrooms until they are deeply browned and caramelized. Use them as a savory filling for sliders, or mix them with grains and binders to form a mushroom burger patty. They provide a meaty texture and rich umami flavor that is highly satisfying.