Chocolate Brownie Quest Bar Review (New Corn Fiber Type)

All Quest Bars are made of high quality protein and have plenty of fiber, but these days that’s not enough. Food tech has advanced to the point that a nutrition bar must also be delicious to be called the best. So in this review I’ll let you know how the Chocolate Brownie Quest Bar tastes, and what difference the new fiber type has made.

Chocolate Brownie Quest Bar


The official description from Quest’s website:

One of the world’s iconic desserts, brownies have been re-invented for a new #CheatClean generation! Even the most critical brownie connoisseur will forever remember the first time they taste the Chocolate Brownie Quest Bar!

It’s an uncoated chocolate-flavored protein bar. This is what it looks like:

Chocolate Brownie Quest Bar, no wrapper

Taste & Texture

Strong cocoa flavor, sweet enough, and quite stiff and chewy.

The Chocolate Brownie Quest Bar is a nice product, and as un-protein-bar-like as all Quest Bars. However, it’s one of their plainest flavors, and the uniform texture in particular makes it less interesting than some of their other varieties. As such it’s one of my least favorites.

That said, it is still a Quest Bar, which means it’s damned good compared to most protein bars.

As with all Quest Bars it’s great as it is, but it’s even more rich and dessert-like heated about 10 seconds in a microwave or baked a few minutes (which is even better because the outside goes crispy).

Corn Fiber Recipe Update

Quest Nutrition built their reputation with IMO (isomaltooligosaccharide) fiber as a main ingredient in their bars. That’s notable because they’ve since removed IMO from their line up entirely and now use corn fiber instead, claiming it makes a softer, longer-lasting product.

In light of that I was a bit surprised by how chewy this flavor was—the new fiber type is advertised as being softer, but it’s about as stiff as I remember the IMO version being. It’s not unpleasant, just that the new fiber hasn’t had the same softening effect on this flavor as some of the other ones. Perhaps it’s something to do with the cocoa content, I’m not sure.


Serving size: 60 g
Calories: 170
Fat: 7 g
Net carbohydrate: 6 g (<1 g sugar)
Fiber: 15 g
Protein: 20 g

(Weights of Quest Bars can vary quite a bit, leading to significantly different caloric content than stated on the label. I did a write-up here.)

Chocolate Brownie Quest Bar Rating: 6.5/10

I like this flavor, but definitely prefer other ones (particularly the options with chocolate chunks).

I’d buy this one only if my preferred flavors weren’t in stock.

Thanks so much for reading. If this was useful, I have reviews of all Quest Bars here.

All feedback and questions welcome, I’d love to hear from you—just use the comments box below or send me an email.

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  1. My biggest concern about Quest Bars is that they’re using corn fiber and corn is one of the most heavily pesticided (is that even a word) products in the U.S.

    1. If it’s not a word, let’s make it one!

      I’m not too concerned about pesticides myself. Everything I’ve encountered indicates that levels are well beneath what our bodies can tolerate and process pretty readily, and the benefits of eating produce grown with pesticides far outweigh any potential negatives of the pesticide residue or systemic content.

      Additionally, the levels of pesticides the plants themselves make are way higher—and some of them are actually pretty toxic. But again we deal with them just fine.

      Thanks for reading, Janine.

  2. Systemic pesticides can affect your grandchildren… still think they are harmless synthetic products?

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