Kirkland Signature Mixed Nut Butter

The Verdict

Kirkland Signature Mixed Nut Butter Review: The Costco Giant That Actually Delivers

Let me be direct: most store-brand nut butters are forgettable. They’re either too sweet, too oily, or taste like the cardboard they shipped in. Kirkland’s Mixed Nut Butter is not that. After 225 Amazon ratings holding a solid 4.5 stars, this jar has earned its place in my pantry — and it might earn one in yours.

What You Actually Get

This is a 27-ounce jar (that’s 765 grams for the metric-minded) of blended almonds, cashews, and pecans. The ingredient list is refreshingly short: dry roasted mixed nuts, cane sugar, palm oil, and sea salt. That’s it. No hydrogenated garbage, no artificial anything.

The packaging is standard Kirkland — functional, not flashy. The wide-mouth jar makes scooping easy, and the label is clear about what’s inside. As shown in the product image, the butter has a smooth, glossy appearance with visible nut flecks throughout.

Performance in the Real World

Here’s where this butter surprises. The nut ratio is smart — almonds give structure, cashews provide creaminess, and pecans add a buttery finish that lingers. You actually taste all three, which is rare in blended nut butters that usually collapse into a single generic “nut” flavor.

The texture is where opinions split. It’s runnier than your typical peanut butter. At room temperature, it pours more than spreads. One reviewer put it plainly: “It’s more like a nut sauce than a nut butter.” That’s not necessarily bad — it melts beautifully into oatmeal, smooths into smoothies without clumping, and makes an exceptional base for Thai peanut-style sauces.

But if you’re making a PB&J for a lunchbox, this will soak through bread before lunch period. Plan accordingly.

What Buyers Keep Saying

The praise clusters around two themes: value and taste. One Amazon reviewer wrote, “I bought this on a whim and now I’m buying it every month. The price at Costco is unbeatable for this quality.” Another noted, “My kids fight over the last scoop. I hide a jar in my office.”

The consistency complaints show up consistently too: “Great taste but it separates fast. I keep it in the fridge and it’s still runny.” Several reviewers mention the palm oil as a concern, though most accept it as the trade-off for a no-stir product.

Where It Falls Short

Let’s be honest about the downsides. The palm oil is there for stabilization, but if you’re shopping for a clean-label product, this isn’t it. The cane sugar (3 grams per serving) is unnecessary but minor. And the roast level is gentle — if you want that deep, dark, almost-burnt nut flavor from artisanal brands, this won’t satisfy.

The runny texture is the biggest practical issue. Plan for drips, plan for soggy sandwiches, and keep a paper towel handy.

Who Should Buy This

Buy it if you’re a smoothie person, an oatmeal person, or someone who goes through nut butter fast enough to justify the 27-ounce size. It’s also perfect for families — the mild flavor appeals to kids while the quality keeps adults happy.

Skip it if you demand organic ingredients, hate palm oil on principle, or need a thick, spreadable texture for sandwiches.

Three Questions Shoppers Ask

Does it need refrigeration? Not technically — the palm oil prevents separation. But refrigerating slows the runniness. Find your preference.

How does it compare to Justin’s or Barney Butter? Those are smoother and cleaner-label, but you’ll pay double per ounce. Kirkland wins on value.

Is it actually a good deal? At Costco’s price, you’re getting roughly half the per-ounce cost of comparable nut butters. Yes, it’s a deal.

The Verdict

This is a solid, honest product that overdelivers at its price point. The flavor is genuinely good, the value is exceptional, and the versatility makes it a kitchen workhorse. It’s not a premium product — it doesn’t pretend to be — but it’s the best budget-friendly mixed nut butter I’ve tested.

Buy it if you want quality without the artisanal markup. Skip it if you’re strict about palm oil or need a thick, stable spread.

Rating: 4.6/5 — minus a half-star for the runny texture and added sugar. Everything else earns its keep.

Where to Buy

👉 Check Price on Amazon →

We earn a small commission at no extra cost to you — this helps fund more honest reviews.

Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.