10 Best Protein Bars Sold At Costco of 2025

Tested and Reviewed: Top 10 Protein Bars Sold At Costco deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

KIRKLAND

Kirkland Signature Protein bar Energy Variety Pack, (Family Bundle)

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Editor's bottom line:

“This protein bars sold at costco is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Protein Bars Variety Pack: Contains 12 protein bars with different flavors and textures
Kirkland Signature Brand: Made by Kirkland Signature, a trusted brand known for quality and affordability
Adult Energy Bars: Perfect for active adults and fitness enthusiasts looking for a convenient energy source
Pouch Packaging: Comes in a resealable pouch for easy storage and portability
No Artificial Ingredients: Free of artificial colors, flavors, sweeteners and preservatives

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Picked by 397 people today

9.5

KIRKLAND

Kirkland Signature Protein Bar Variety Pack 20 Count Chocolate Peanut Butter Chunk & Cookies and Cream Gluten Free 21-22g of Protein 2g Sugar No Artificial Flavors Whey Protein Isolate

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Main Highlights

Gluten Free Variety Pack: Contains 20 gluten free protein bars in different flavors like chocolate, cookies and cream
High Protein Content: Each bar contains 21g of protein to help build and repair muscles
No Artificial Flavors: Free of artificial flavors and colors
Whey Protein Isolate: Contains whey protein isolate for fast digestion and absorption
Lightweight and Portable: Each bar weighs 1.45oz and comes in a resealable pouch for convenience

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9.5

BENTRONIC

Protein Bars Variety Pack, 40 ct, 2.12 oz Each, Kosher Certified, Bundled by Bentronic

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Main Highlights

40-Bar Variety Pack Includes 10 Chocolate Peanut Butter Chunk, 10 Cookies & Cream, 10 Chocolate Brownie, and 10 Chocolate Chip Cookie Dough.
High-Protein Snack Ideal for pre- or post-workout use, meal replacement, or healthy snacking.
On-the-Go Convenience 2.12 oz individually wrapped bars for easy carrying anywhere.
Balanced Taste & Nutrition Delicious dessert-like flavors with the protein your body needs.
Bundled by Bentronic Exclusive mixed pack curated by Bentronic for maximum freshness and variety.
Kosher certified OU
Gluten Free

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9.2

Cemueo

Bulk Pack Protein Bars (Kirkland Signature, Chocolate Chip Cookie Dough, 20-Pack)

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Main Highlights

Delicious Flavor: Indulge in the rich taste of chocolate chip cookie dough while staying on track with your nutrition goals
High Protein Content: Packed with 21g of protein per bar to fuel your workouts, support muscle recovery, and keep you energized.
Convenient 20-Pack: Perfect for busy lifestyles, meal prepping, or stocking up on healthy snacks for home or on the go.
Low Sugar, High Fiber: Designed to satisfy cravings without the guilt, with only 1g of sugar and 10g of fiber per bar.
Versatile Snack Option: Ideal for post-workout recovery, a midday energy boost, or as a convenient meal replacement.

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9.0

KIRKLAND

Kirkland Signature Protein Bars Chocolate Brownie 2.12 oz, 20-count

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Main Highlights

Protein Bar
Chocolate Brownie
Kirkland Signature

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8.8

Pure Protein

Pure Protein Chocolate Deluxe Protein Bars – 21g Protein, 3g Sugar, 190 Calories (12 count) Low Sugar* High Protein Snack - Gluten Free - Perfect for a Healthy Snack

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Main Highlights

Protein Bars Low Sugar* High Protein this bar contains just 3g of sugar and balanced macros, offering a smarter choice than candy bars or sugary snacks while still delivering the flavor you crave and look forward to.
Convenient Pantry Staple - Individually wrapped nutrition bars, perfect for office snacks, school snacks, or afternoon treats. Delivering clean, portable energy for pre-workout, post-practice recovery, or any other protein needs
Chocolate Deluxe: A decadent experience for the true cocoa lover, featuring rich, multi-layered chocolate textures. It proves that a deep, fudgy indulgence can still be a functional part of a balanced fitness routine.
Macros That Work for You this bar packs 20g of protein with only 190 calories, 3g of sugar, and balanced macros. A smart option that combines the nostalgic after-school treat flavor with convenient, functional fuel you can enjoy anytime.
Gluten Free Option Certified gluten free protein snacks for adults fit into more diets without compromise, offering dependable nutrition and great taste for families, athletes, and snackers who want high protein bars they can trust daily.

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8.6

Generic

Chewy Protein Bars, Peanut Butter & Semisweet Chocolate Chip – Quality Kirkland – Gluten Free, 10g Protein, 1.41 oz, 42 Count

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Main Highlights

Peanut butter and semisweet chocolate chips A satisfying blend of creamy and rich flavors with a soft, chewy texture. 10g of protein per bar Helps support energy and satiety between meals or after activity. Gluten free and Kosher certified Meets dietary needs without sacrificing taste or texture. Each bar weighs 1.41 oz Perfectly portioned for a balanced snack option. 42 individually wrapped bars Ideal for school lunches, office drawers, or snack stations at home.

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8.3

Quest

Quest Nutrition Ultimate Variety Pack Protein Bars, High Protein, Low Carb, Gluten Free, Keto Friendly, 12 Count

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Main Highlights

Quest Ultimate Protein Bars Variety Pack. Your favorite Quest protein bars! In one fantastic variety pack! Enjoy the many delicious tastes of our classic protein bars. Try the protein bars value pack with 20-21g of protein and 4-5g of net carbs, and 0-2g of sugar*.
ON A QUEST. Quest protein bars deliver the great taste you want in a snack.
AT HOME OR ON-THE-GO. Delicious protein bars that fit right into your busy schedule.
BITE INTO QUALITY PROTEINS: Every Quest product is made with high-quality dairy-based proteins to help give your body the amino acids you need.
SERVING SIZE: Offered in 12ct cartons containing individually wrapped 1.76oz bars.

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8.1

ONE

ONE Protein Bars, NEW Hershey's Double Chocolate, Gluten Free with 18g Protein and 3g Sugar, Pantry Staples 2.12 oz (12 Pack)

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Main Highlights

HERSHEY DOUBLE CHOCOLATE PROTEIN: Enjoy a protein packed ONE bar inspired by the flavor of HERSHEY'S chocolate candy for breakfast or lunch, or bring it with you to the office or gym, golf course, or for a pre- or post-workout snack
WHEY PROTEIN ISOLATE: Try our delicious gluten free protein bars packed with 18 grams of whey isolate protein and 3 grams of sugar per bar
ON THE GO PROTEIN: ONE protein bars are perfect for enjoying while hiking, golfing, traveling, family gatherings, after the gym, and all the ordinary days in-between
DELICIOUS HIGH PROTEIN BARS: Enjoy classic HERSHEY'S chocolate inspired flavor with ONE protein bars all year long
THE ONE PROTEIN BAR: Discover all the mouthwatering, high-protein bars from ONE! Whether you're craving our classic core flavors, limited-edition options, or even a Hershey's ONE Reese's Peanut Butter Lovers Bar, weve got something for every taste. Packed with protein and flavor, these bars are perfect for fueling everyday. Try them all and find your next pantry staple today!
COLD PACK SHIPPED: items will be shipped with cold packs to prevent the product from melting during the summer months if needed

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8.1

Pure Protein

Pure Protein Chocolate Peanut Butter Protein Bars – 20g Protein, 3g Sugar, 190 Calories (12 count) Low Sugar* High Protein Snack - Gluten Free - Perfect for a Healthy Snack

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Main Highlights

Protein Bars Low Sugar* High Protein this bar contains just 3g of sugar and balanced macros, offering a smarter choice than candy bars or sugary snacks while still delivering the flavor you crave and look forward to.
Convenient Pantry Staple - Individually wrapped nutrition bars, perfect for office snacks, school snacks, or afternoon treats. Delivering clean, portable energy for pre-workout, post-practice recovery, or any other protein needs
Chocolate Peanut Butter: A perfect harmony of creamy, savory nut butter and smooth dark cocoa. This classic duo offers a satisfyingly rich texture that makes hitting your daily protein goals feel like a reward rather than a chore.
Macros That Work for You this bar packs 20g of protein with only 190 calories, 3g of sugar, and balanced macros. A smart option that combines the nostalgic after-school treat flavor with convenient, functional fuel you can enjoy anytime.
Gluten Free Option Certified gluten free protein snacks for adults fit into more diets without compromise, offering dependable nutrition and great taste for families, athletes, and snackers who want high protein bars they can trust daily.

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Our Best Overall Choice

Best Choice

9.7

KIRKLAND

Kirkland Signature Protein bar Energy Variety Pack, (Family Bundle)

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Protein Bars Variety Pack: Contains 12 protein bars with different flavors and textures
Kirkland Signature Brand: Made by Kirkland Signature, a trusted brand known for quality and affordability
Adult Energy Bars: Perfect for active adults and fitness enthusiasts looking for a convenient energy source
Pouch Packaging: Comes in a resealable pouch for easy storage and portability
No Artificial Ingredients: Free of artificial colors, flavors, sweeteners and preservatives

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