9 Grocery Items You Should Buy At Trader Joe's Instead Of Costco, According To Shoppers

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Costco and Trader Joe's are two of the most popular chains on the grocery scene, but the two stores offer distinctly different shopping experiences. While Costco's supersized warehouses are the go-to for bulk buying and stocking up on household goods, Trader Joe's smaller stores sell a more curated selection of specialty foods. Both, however, are known for their great value, and there's still plenty of product crossover between the two.

At both chains, you'll find a range of everyday essentials, such as meats, cheeses, fresh produce, and snacks, but when it comes to certain grocery staples, a trip to Trader Joe's can be a smarter choice. According to shoppers, the neighborhood chain often excels in terms of quality and price, particularly if you don't need a warehouse-sized package. Costco is undoubtedly home to some must-have items, but it doesn't always outshine its competitors. Here are eight grocery items that shoppers say are best bought at Trader Joe's.

Whether you're swirling it into pasta, drizzling it over eggs, or swiping it into a sandwich, pesto makes for a versatile addition to your grocery cart. This flavor-packed staple is available at both Trader Joe's and Costco, and while both versions are well-reviewed by customers, the Trader Joe's pesto has the edge. 

If you're after a bulk quantity of pesto, Costco's 22-ounce jar of Kirkland Signature Basil Pesto is a great option. This product has earned itself a loyal following, but there are plenty of reasons to consider switching to Trader Joe's take on the herby sauce. The TJ's Kale, Cashew, and Basil Pesto comes in a smaller 8-ounce tub, so there's no racing to get through a huge jarful before it goes bad. Flavor-wise, the Costco pesto has also been dubbed by some customers as overly salty and a little too rich, while the TJ's version offers a more balanced taste.

One Reddit user who recommended making the swap noted that the Trader Joe's kale pesto was "much healthier and still delicious," and they have a point. Costco's product is much higher in saturated fat, and TJ's pesto is completely plant-based, since it's made with cashews rather than traditional Pecorino cheese.

Cheese lovers will likely already be familiar with the impressive selection of offerings at Trader Joe's. The chain stocks a whole host of delicious wheels and wedges, from classics like cheddar and Monterey Jack to more uniquely flavored varieties (think Wild Blueberry Vanilla Chevre or The Sheepish Tomato). Costco is also a reliable destination for stocking up on cheese, but its selection focuses more heavily on familiar favorites rather than specialty offerings. Here, cheeses also tend to come in much larger portions, so they're not as well-suited to smaller households or those who prefer having multiple cheeses on the go at once.

With Trader Joe's smaller portions and arguably much more interesting cheese range, it's easier to experiment with trying new products (or build a pretty epic charcuterie board). "The Trader Joe's cheeses are affordable and high quality," was the verdict from one Reddit user, who also noticed that TJ's shredded cheeses tend to keep much better, with Costco versions going moldy much more quickly. Another discussion highlighted Trader Joe's fair pricing, and some customers shared their standouts from the selection, including the caramelized onion cheddar and stracciatella.

Trader Joe's beloved Peanut Butter Filled Pretzel Nuggets first hit the shelves in 1992, and customers have long raved about their irresistible sweet-and-salty taste. But these crunchy snacks aren't unique to TJ's. Many other brands sell their own versions, including Costco. The Kirkland Signature pretzel nuggets also boast a golden, pillow-shaped appearance and peanut butter-filled interior, and they're certainly not to be sniffed at. However, for the very best peanut butter pretzel experience, customers suggest heading to Trader Joe's.

When we ranked 13 peanut butter-filled pretzel products, the TJ's fan-favorite came out on top, with our taste tester praising the exceptional crunch and balanced salty-sweet taste. The Costco version, on the other hand, took third place, losing points for its less-than-generous filling. And plenty of customers agree that TJ's reigns supreme. On Reddit, one fan remarked that the Trader Joe's pretzels were "easily among the top 100 inventions in the history of humanity." They're a budget-friendly pick, too, with a 16-ounce package of the snacks costing just $2.69 at the time of writing. This still manages to beat the price of Costco's gigantic 55-ounce pretzel tub, ounce for ounce.

When it comes to frozen meals, Trader Joe's is hard to beat. Many of these products have been dubbed better than takeout, and they're often made with natural, minimally processed ingredients. Costco frozen meals have their place, especially if you're looking to feed a crowd on a budget, but shoppers frequently favor TJ's for stocking the freezer with convenient, flavorful, and healthy options.

An icon of the Trader Joe's frozen aisle is the Mandarin Orange Chicken, which has been delighting customers since 2004. This easy-to-prep, takeout-style entree offers an irresistible balance of sweet and savory flavors, and it's been voted the best product on offer at TJ's multiple times. The Family Style Meat Lasagna is another frozen meal worth adding to your cart. When we compared this to Costco's version, Trader Joe's was the clear winner, with its lasagna delivering a much richer, herbier flavor and containing a much more generous helping of cheese.

Other customer-approved picks include the Paneer Tikka Masala, which comes with a rich, spicy tomato cream sauce, and the Kung Pao Chicken, which tastes great with a side of rice, noodles, or extra veggies.

If eggs are a regular on your grocery list, it's worth considering what you're getting for your money. You can buy organic, cage-free eggs in various quantities at Costco, but if quality is key, you're better off picking up this staple at Trader Joe's. Those who've purchased eggs from both stores say the TJ's version is not only fresher and less watery, but also superior in taste. In fact, in a Reddit discussion, customers described Costco eggs as "very bland" and having "thin shells, pale yolks, no flavor," with one user stating they simply "don't taste right."

It's also worth noting that Trader Joe's eggs are pasture-raised and antibiotic-free. The chain's website states that the chickens roam on open pastures and forage, which results in rich, golden, and flavorful yolks. While many of the Costco eggs are labeled as cage-free, this doesn't necessarily mean the chickens have had access to outdoor space, since eggs laid by barn-raised chickens can also meet the cage-free qualifications.

Pine nuts are a popular addition to homemade pesto and great for adding crunch to salads, soups, and pasta dishes, but they can be pricey. You might think that bulk-buying at Costco is the way forward here, but Trader Joe's pine nuts (labeled as pignolias) offer surprisingly great value. Multiple sources highlight the relatively low cost of the nuts when compared to other retailers. Costco is still marginally cheaper, but the price per ounce of TJ's pine nuts is incredibly close to that of Costco's larger 24-ounce package, with just a few cents' difference. Historically, both products have been priced somewhere in the region of one dollar per ounce.

So, if the cost is comparable, why buy pine nuts from Trader Joe's? The answer lies in the flavor. One customer noticed a stark difference between the two and took to Reddit to share their insights. "Switched to TJs for pine nuts. We used to buy them at Costco, but they are basically tasteless," they wrote, adding, "TJ's are much more flavorful." Another fan of the TJ'S pignolias praised the quality of the product, noting that they stayed fresh for much longer than nuts bought elsewhere. Trader Joe's also stocks a wide selection of other nuts and seeds, including those with fruity mix-ins and moreish sweet-and-salty coatings (Honey Butter Cashews, we're looking at you), so there's all the more reason to pay a visit to your local store.

Packed with nutrients and natural sweetness, dried mango is a top-tier snack, and this is another grocery item that Trader Joe's does better than Costco. Both stores sell organic, unsulfured, and unsweetened versions of this sunny treat, and they look pretty similar at first glance. Despite this, the two products provide noticeably different flavor profiles, with the TJ's version being preferable for many.

The Trader Joe's dried mango is grown in a specific region of Mexico where the climate yields "high-brix" fruit. This essentially means that the mangoes contain a greater concentration of natural sugars, which contributes to their exceptional flavor. The mango pieces are soft, chewy, and bursting with tangy brightness, so it's no surprise that customers prefer them to the Costco version. One Redditor even proclaimed TJ's offered better dried mango than any other store. And if you like your fruit with a spicy twist, give the Trader Joe's Chile Spiced Mango a try. This bold twist on the classic snack earned itself the top spot in our ranking of 15 Trader Joe's dried fruit products.

Trader Joe's hummus selection is elite. The range features everything from classic, creamy chickpea blends to those spiked with bold, savory add-ins. The chain once even offered a chocolate-flavored dessert hummus, which was a big hit among customers. You really can't go wrong picking up one of the TJ's flavor-packed dips, and once again, the Costco competition falls short.

On Reddit, a customer shared their preference for Trader Joe's hummus, explaining that the massive size of the Costco tubs simply isn't practical. In a separate discussion about unbeatable Trader Joe's products, the chain's signature hummus was also a top mention, and the flavored versions received plenty of hype, too. One Reddit fan of the Mediterranean Style Hummus raved about the dip's "balance of savory, salty, citrus, and umami flavors." The Crunchy Chili Onion Hummus was a favorite in another thread, where it was described as "the absolute best" and "so addictively spicy."

On the other hand, Costco's hummus doesn't always garner the most positive feedback. "One of the worst Costco purchases ever," was the verdict from one Redditor, who was referring to the Kirkland Signature Organic Roasted Pine Nut Hummus. Others noted the product's lack of flavor, suggesting that it worked better as a base for enhancing with other seasonings.

The fresh produce department at Trader Joe's is a shopper favorite, and the fruit and veggies here are widely considered fresher, more affordable, and higher in quality than their Costco equivalents. Customers rate the fruit selection in particular, with items like lemons, blueberries, and apples often costing less at TJ's pound for pound. A Reddit user also suggested that bananas were fresher at Trader Joe's, claiming that plastic-wrapped Costco counterparts are more prone to mold. Elsewhere, a disappointed customer claimed to have stopped purchasing produce from Costco altogether, after multiple purchases spoiled shortly after bringing them home.

Whether you're looking for prepared salads, pre-diced fruits, or good old-fashioned whole veggies, you can rely on Trader Joe's to deliver on both diversity and quality. There are some rather novel additions to the produce lineup that you won't find at Costco, too. For example, the "Teeny Tiny" Avocados, which are perfect for a single serving. You'll also find miniature-sized tomatoes, great for adding pops of color to salads and bowls without the need for chopping.

It's clear that Costco and Trader Joe's have different strengths, and finding the grocery items where TJ's had the edge took careful research. Our goal was to source the opinions of actual customers who have directly compared similar products from the two chains. Reddit was particularly useful for uncovering these first-hand experiences, with many discussions pitting the stores against each other, and countless product recommendations emerging from the debate. For every item in this lineup, the general consensus was that Trader Joe's does it better, whether that's in terms of flavor, cost, or overall quality.