Pros

  • The peanut butter flavor is rich, delicious, and reminiscent of classic Reese’s Peanut Butter Cups without an unpleasant aftertaste.
  • Bars have a satisfying crunch and chewy, soft texture that many find enjoyable.
  • Each bar packs a solid 18 grams of protein with only 3 grams of sugar, making it a nutritious option.
  • Very filling and dense; a great snack to curb peanut butter cravings or hold you over between meals.
  • Convenient grand-go option suitable for breakfast, lunch, or post-workout fuel.
  • Considered high quality and superior in flavor compared to other similar products, especially Hershey’s alternatives.
  • Provides excellent value when purchased in bulk as a pantry staple.
  • Taste is often described as better than nostalgic 'Space Food Sticks,' but with more appeal and modern flavors.
  • Highly recommended for those who prefer chewy, proteiich bars with a candy-bar-like taste.

Cons

  • Contains maltitol, a sugar substitute that may cause significant digestive issues such as stomach cramps, excessive gas, diarrhea, and nausea for sensitive individuals.
  • Side effects from maltitol can be delayed by hours and may last several days, so trying one bar slowly is advisable.
  • Not ideal to consume before important events or social occasions due to potential digestive discomfort.
  • Slightly too sweet for some palates, though still enjoyable overall.
  • Does not taste exactly like a peanut butter cup, so flavor expectations should be aligned accordingly.

Bottom Line

The ONE Protein Bars in Reese’s Peanut Butter Lovers flavor offer a compelling combination of decadent peanut butter taste, high protein content, and low sugar, making them a fantastic option for snackers, athletes, or anyone craving a sweet but smart treat. However, those sensitive to sugar alcohols like maltitol should proceed with caution and test tolerance gradually to avoid unpleasant digestive side effects. If you want a dependable, tasty peanut butter protein bar with gluten-free credentials, this product stands tall. For those wary of maltitol, exploring other protein bars without this ingredient might be a safer bet.

Lowest at any Popular Retailer
$35.98 at Walmart
How we researched this

About this review: We pulled together findings from professional reviews and hundreds of user reviews, and cross-referenced them with ShopSavvy's pricing data from 2 retailers to give you the short version.

Where to Buy

Prices last updated: June 16th 2026 6:02 am
Get ShopSavvy
ShopSavvy is totally free and works on all popular phones and browsers
Download ShopSavvy AppDownload ShopSavvy App

Compare prices across thousands of stores in real-time, set price alerts, watch for deals by keyword, and much more.

Install ShopSavvy Browser ExtensionInstall ShopSavvy Browser Extension

Compare and track prices automatically while you shop online at thousands of websites.

Latest Deals

🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️

3 months ago
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️
🛍️

3 months ago