Costco’s September shelves are filling up fast with fall bakery treats, new freezer finds, protein-packed snacks and a few unexpected launches. These are the 14 Costco finds creating the most early buzz as September 2026 gets underway.
1. Kirkland Signature Pumpkin Bar Cake – $16.99
Status: Returning seasonal item — VERY HIGH BUZZ
- This is probably the hottest September Costco food right now.
- The roughly 2.5-pound cake combines pumpkin-spice cake, pumpkin mousse and frosting.
- A fresh Instagram post from Costco Hot Finds helped kick off the buzz, and it is showing up among Warehouse Runner’s current trending items.
- Even a new August 31 r/Costco cake discussion already has shoppers asking about the returning pumpkin bar.
Verdict: Don’t leave this one out simply because it technically returned rather than debuted. It’s one of the biggest Costco conversations heading into September.
2. Kirkland Signature Mini Pain au Chocolat – $9.99 for 20
Status: NEW
- One of the strongest genuinely new bakery launches.
- Costco is selling 20 miniature chocolate-filled pastries for about 50 cents each.
- Costco-focused creator coverage started appearing around August 26, and a late-August September haul called it a new bakery item.
- Warehouse tracking showed it already appearing across hundreds of locations.
Why shoppers want it: Coffee-shop style chocolate pastries at Costco pricing could make this one a breakout bakery hit.
3. Doughlicious Chocolate Chip Cookie Dough & Gelato Bites – $9.89
Status: NEW — HIGH BUZZ
- Vanilla gelato wrapped in chocolate-chip cookie dough.
- Warehouse Runner first detected this Costco item on August 25, making it one of the freshest products in this entire roundup.
- It has already appeared in new-product videos and Warehouse Runner’s trending feed.
- Recent food coverage has also highlighted positive shopper and social reactions.
Verdict: This has all the ingredients of a Costco freezer-aisle viral product.
4. Cherry Berry Sourdough Bread With Pecans – $9.99
Status: NEW/EXPANDING — HIGH BUZZ
- Loaded with cherries, blueberries, cranberries, pecans, seeds and grains.
- Costco September haul videos are specifically calling it a new bakery arrival.
- More importantly, there’s genuine recent Reddit activity: a fresh r/Costco discussion includes numerous shoppers praising it, discussing freezing extra slices and serving it toasted with cream cheese. Some shoppers do think $10 is pricey.
Verdict: Great product for your article because there is already enough shopper feedback to discuss both the hype and the price criticism.
5. Jones Soda Fallout Nuka-Cola Quartz Variety Pack – $19.69–$20.29
Status: NEW — VERY FRESH BUZZ
This one may be the sleeper viral September find.
- Twelve glass bottles with three Fallout-inspired flavors.
- It was featured in an August 31 September Costco haul.
- Fresh Reddit posts appeared August 30 after shoppers began finding the new pack, including reports of Costco sightings in Nevada.
- Warehouse Runner currently shows the item distributed across hundreds of warehouses, although actual stock is much tighter.
Verdict: Fallout collectors may buy it as much for the bottles and packaging as the soda itself.
6. CT Bakery Apple Cider Cake Donuts – About $6.99 for 12
Status: Seasonal arrival
- Soft cake-style apple cider donuts coated in cinnamon sugar.
- Fresh Costco videos were spotting the 12-pack as September inventory over the weekend.
- They also started showing up in Costco-focused Instagram coverage during the final week of August.
Why it matters: This is exactly the type of inexpensive, instantly recognizable fall food that gets impulse-added to carts.
7. La Colombe Pumpkin Spice Draft Latte – 12-Pack
Status: NEW FALL ARRIVAL
- Costco’s current product listing identifies the 12-pack of 9-ounce Pumpkin Spice Lattes.
- Made with espresso-roast coffee and whole milk with a lightly sweet pumpkin-spice profile.
- It has now landed on several freshly published September Costco roundups.
Verdict: A strong pick for shoppers who want pumpkin coffee without paying coffee-shop prices every morning.
8. Fischer & Wieser Maple Pumpkin Butter & Pecan Apple Butter – About $10.99
Status: NEW SEASONAL DUO
- Two 18.5-ounce jars: Maple Pumpkin Butter + Pecan Apple Butter.
- First warehouse detection was only August 15.
- Current Costco tracking puts the price around $10.99, down from roughly $11.49 in some early sightings.
Why it’s interesting: Toast, pancakes, waffles, oatmeal, charcuterie boards and fall baking give this much broader usefulness than another pumpkin-flavored snack.
9. Magic Spoon Protein Treats Variety Pack – Around $14.99–$20
Status: NEW COSTCO VARIETY/ROLLOUT
- Costco’s current listing shows a 14-count variety pack.
- The current configuration includes S’mores and Marshmallow varieties with at least 11 grams of protein and 7 grams of fiber per serving.
- A Reddit discussion from August 29 specifically mentioned finding the Costco pack and called the club-size pricing substantially better than buying individual boxes elsewhere.
- Availability and exact flavor assortment appear to vary regionally.
Verdict: Protein snacks continue to be one of Costco’s hottest categories, and this fits perfectly into the back-to-school/back-to-routine September theme.
10. Crepini Cottage Cheese Protein Pancakes – About $12.99 for 20
Status: EXPANDING TO MORE COSTCO REGIONS — HIGH SOCIAL INTEREST
This one has a particularly useful shopper comparison.
- Made with cottage cheese, egg whites and oats.
- Costco availability is expanding into additional regions.
- A very fresh August 27 Reddit comparison received substantial engagement, with the poster preferring Costco’s Crepini version to Trader Joe’s protein pancakes because of the price and fluffier texture.
Verdict: Excellent candidate for a separate “Costco vs. Trader Joe’s” article too.
11. Good Foods Chimichurri – About $9.49–$9.99
Status: NEW REGIONAL ROLLOUT
- Two 11-ounce bottles.
- Cilantro, parsley, garlic, olive oil, red wine vinegar and spices.
- First tracked at Costco August 1 and now showing very strong availability where it has rolled out.
- Recent Costco videos and September coverage are already highlighting it for steak, chicken, potatoes, eggs and bowls.
Verdict: Less flashy than cake, but potentially one of those Costco products people repeatedly rebuy.
12. Joolies Watermelon Date Sours – $14.89
Status: BRAND-NEW TO COSTCO
- A 16-ounce Costco-exclusive club-size format.
- Made from organic dates with no added sugar, sugar alcohols or artificial ingredients.
- Launched in August across Costco warehouses in much of the Southeast, including Alabama, Florida, Georgia, North Carolina, South Carolina, Tennessee and Puerto Rico.
- September coverage is already picking up enthusiastic social reactions.
Verdict: The “better-for-you Sour Patch Kids alternative” angle makes this highly clickable.
13. Honey Smoked Fish Co. Salmon Stackers – About $14.29
Status: NEW/EXPANDING
- Four individual snack kits with hot-smoked salmon, rice crackers and spread.
- Think of them as a more premium, high-protein version of a Lunchable.
- They initially launched in the Southeast and are scheduled to expand more broadly through September.
- Recent TikTok-linked Costco coverage has been positive about both taste and convenience.
Verdict: Great for work lunches, travel or anyone trying to increase protein without relying on protein bars.
14. Kirkland Signature Pumpkin Cheesecake With Whipped Topping
Status: RETURNING SEASONAL FAVORITE
- Costco brought this fall favorite back earlier than usual this year.
- Fresh September coverage is already putting it near the top of Costco’s fall bakery buys.
- Smooth pumpkin-spiced cheesecake with whipped topping makes it one of the items most likely to accelerate in buzz as September progresses.
Verdict: Technically not brand-new, but I’d include it because people searching for “new at Costco in September” are absolutely looking for newly returned seasonal bakery products too.
