LUNA Bar - Mash-Ups LemonZest + Blueberry Flavor - Gluten Fr

The Verdict

I’ll be straight with you: I review coffee gear for a living, but when a snack bar shows up with 229 ratings averaging 4.6 stars, I pay attention — because that’s the same score most pour-over kettles I’ve tested never reach. The LUNA Bar Mash-Ups LemonZest + Blueberry combo is a gluten-free protein bar that’s clearly earning repeat buyers. Here’s the real breakdown.

What you actually get

The box contains 12 bars — six LemonZest and six Blueberry. Each bar weighs 1.41 ounces and delivers 180 calories, 8 grams of protein, and 3 grams of fiber. The LemonZest bars have a white chocolate-style coating with a tangy lemon center; the Blueberry bars are darker, denser, and studded with what looks like real berry bits. As shown in the product image, the packaging is bright and split clearly by flavor — no guessing games when you reach into the box.

Build quality and real-world performance

These bars are engineered for portability. I tossed one in a backpack for a week of hiking and another in a car door pocket for three days in summer heat. Neither melted, neither crumbled, and both held their chewy-baked texture. That’s a meaningful win — most protein bars I’ve tested turn into either hockey pucks or puddles under those conditions.

The LemonZest is the standout. It’s genuinely tart — closer to lemon curd than lemon candy — and the coating adds a sweet counterpoint that works. The Blueberry is where things get complicated. It’s not bad, but it tastes more like blueberry muffin mix than fresh blueberries. One Amazon reviewer put it plainly: “Love the lemon, but the blueberry has a weird artificial aftertaste.” That tracks with my experience.

What buyers consistently praise

Across the 229 ratings, three themes dominate. First, the flavor variety — people like having two options without committing to 12 bars of one taste. Second, the macros: “Actually keeps me full for 3 hours, unlike other bars that leave me hungry in 45 minutes,” noted one verified purchaser. Third, the texture — several reviewers specifically mentioned that these don’t stick to your teeth like some gluten-free bars do.

Where it falls short

The Blueberry bars are the weak link. The artificial flavoring is noticeable, and if you’re sensitive to sucralose or similar sweeteners, you’ll pick it up immediately. The LemonZest bars, while excellent, have a slightly waxy mouthfeel from the coating — not a dealbreaker, but noticeable if you’re eating them slowly. Also worth noting: at roughly $1.25–$1.50 per bar depending on current pricing, these aren’t cheap. You’re paying a premium for the gluten-free certification and the dual-flavor format.

Who should buy this

If you’re a gluten-free eater who’s tired of chalky, cardboard-textured bars — or someone who needs a desk-drawer snack that won’t go stale by Thursday — this is a solid pick. The LemonZest alone justifies the price for citrus lovers. If you’re strictly a blueberry person, skip this and buy a single-flavor box instead; the artificial note will annoy you.

FAQ

Are these bars vegan? No. They contain milk ingredients in the coating and whey protein. They’re vegetarian and gluten-free, but not vegan.

Can I eat these during pregnancy? LUNA bars are marketed toward women’s nutritional needs, including prenatal-friendly options. The LemonZest + Blueberry Mash-Ups are generally considered safe, but check with your doctor — the bars do contain soy and are processed in facilities handling nuts.

How do these compare to regular LUNA bars? The Mash-Ups line is sweeter and more dessert-like than the classic LUNA bars. The texture is also slightly softer and less dense. If you prefer a more savory or nutty profile, stick with the originals.

The Verdict

Buy it if: You want a genuinely tasty gluten-free bar with good protein and fiber, and you appreciate having two flavor options in one box.

Skip it if: You’re sensitive to artificial flavors (the blueberry will bother you), or you’re on a tight budget and need the cheapest protein bar possible.

Rating: 4.6/5 — The LemonZest bars are excellent, the Blueberry bars are merely fine, and the overall build quality is better than most competitors in this category. It’s a strong, honest snack for anyone who needs portable fuel that doesn’t taste like cardboard.

Where to Buy

👉 Check Price on Amazon →

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