Rated 4.9 · 196 reviews

The bar that started Zentein · Since 2020

Peanut Butter Cup Protein Bars

25 g protein · Five core ingredients · Made weekly

Rich roasted peanut butter, Canadian honey, Belgian dark chocolate and rolled oats in a soft, chewy protein bar.

$57.00 CAD 12 bars · $4.75/bar
Quantity
$57.00/box

Buy more, save more 2 · 5%3–4 · 10%5+ · 15%

SEE IT IN REAL LIFE

Peanut Butter Cup, tasted and reviewed.

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12 bars per box No artificial preservatives, colours or sweeteners Most orders prepared in 1–3 business days

Not sure which bar is right for you? Find Your Zen →

Peanut Butter Cup Protein Bars

Taste & texture

Peanut-butter-cup flavour with a soft, chewy bite.

Flavour

Rich roasted peanut butter, Canadian honey and Belgian dark chocolate, with rolled oats rounding out the bite.

Texture

Soft, chewy and a little fudge-like, with a dense, satisfying bite.

Why freshness matters

Made weekly for quality + texture.

We make our bars every week for the quality and texture we want them to have.

Enjoy your bars as fresh as possible. Their texture behaves like real food because they are made with simple ingredients and no artificial preservatives.

01

Quality at the centre

A weekly production rhythm keeps quality and texture at the centre.

02

Texture changes naturally

The bars can become firmer with time. That is a natural part of working with real ingredients.

03

Warm it back to soft

Remove the wrapper, place the bar on a microwave-safe plate and warm for 10–20 seconds for a softer, gooier bite.

The original

The bar that started Zentein.

Peanut Butter Cup was our first product in 2020. Bovine collagen was part of the original recipe, and it remains one of the bar's protein sources today.

4.9 out of 5 From 196 current reviews Read customer reviews →
01 · SINCE 2020

Our original protein bar

Peanut Butter Cup was the starting point for Zentein.

02 · COLLAGEN FROM THE BEGINNING

Part of the recipe from day one

Collagen was not added later to follow a trend. It was part of the original formulation.

03 · ROOTED IN EXPERIENCE

Why collagen was already familiar

Before Zentein began, Army training and dealing with injuries had already put collagen on our founder's radar. That familiarity helped shape the original bar.

04 · MADE WEEKLY TODAY

Still made every week

We make Peanut Butter Cup weekly in Ontario for the quality and texture we want.

Ways to enjoy it

Enjoy it your way.

Keep it simple, warm it up, share the two pieces or turn it into dessert.

01 · EVERYDAY

Straight from the wrapper

The easy option when you want a quick, satisfying protein snack.

02 · WARM + SOFT

Make it gooey

Remove the wrapper before microwaving. Warm for 10–20 seconds. If it gets especially soft, put it on a plate and enjoy it with a fork or spoon.

03 · TWO PIECES

Share a bite

Share one piece with a friend, split the bar with someone you love or save the second piece for later.

04 · TOP IT

Crumble it

Chop or crumble pieces over ice cream, oatmeal or yogurt for extra peanut-butter-cup flavour.

05 · DESSERT-STYLE

Turn it into a treat

Warm it using the directions above, then add your favourite topping for a richer dessert-style bite.

Five core ingredients

A short recipe you can recognize.

Shown in the same order as on the current package. Each ingredient contributes protein, flavour, sweetness or texture.

Bovine gelatin
01

Bovine gelatin

Protein and a satisfying bite

Why it is here

Bovine gelatin is one of the ingredients that contributes protein and helps create the bar's dense, satisfying bite.

Canadian honey
02

Canadian honey

Real-food sweetness and binding

Why it is here

Honey sweetens the bar and helps hold the five-ingredient recipe together.

Natural peanut butter
03

Natural peanut butter

Flavour, texture and protein

Why it is here

Natural peanut butter brings rich roasted flavour, creamy texture and some of the protein in each bar.

Belgian dark chocolate
04

Belgian dark chocolate

The chocolate layer and finish

Why it is here

Belgian dark chocolate adds cocoa flavour and the chocolate finish that completes the peanut-butter-cup profile.

Rolled oats
05

Rolled oats

Chewy texture and some protein

Why it is here

Rolled oats help create the soft, chewy structure and contribute a smaller amount of protein to the recipe.

Nutrition Facts, ingredients and allergen label for Peanut Butter Cup Protein Bars

Nutrition & ingredients

25 g of protein in each 65 g package.

65 gPer package
270Calories
25 gProtein

Ingredients

Collagen (bovine), sugars (honey), natural peanut butter, Belgian dark chocolate [cocoa mass, sugar, cocoa butter, soy lecithin (as emulsifier), natural vanilla], oats.

Allergen information

Contains: Peanuts, soy.
Produced in a facility that also processes tree nuts, milk, soy and gluten.

Customer reviews

What customers say about the bars.

4.9 out of 5 from 196 current reviews. Customers often mention the taste, satisfying texture and convenience.

★★★★★
“They're so good, it has become a treat for working out! I love that they're whole foods and clean, and they taste great.”
Liz W. · Verified buyer
★★★★★
“They're filling, satisfying, and perfect as a snack or post-workout option. My only minor criticism is the price, but the buy-5-and-save discount makes them much more affordable.”
Nauman G. · Verified buyer
★★★★★
“I’m finding the protein bars very tasty and easy to throw into my bag when I’m on the run.”
Kathy C. · Verified buyer
Read all 196 reviews →

Choose your flavour

Rich & chocolatey or bright & berry?

Same 25g protein. Two very different cravings.

Rich + chocolatey

Peanut Butter Cup

You’re viewing this
Peanut Butter Cup protein bars

Roasted peanut butter, honey + Belgian dark chocolate.

Choose Strawberry Blondie
Bright + berry

Strawberry Blondie

Strawberry Blondie protein bars

Real freeze-dried strawberry, peanut butter, honey + Belgian white chocolate.

Compare the details

Taste

Peanut Butter Cup

Rich, nutty + chocolatey

Strawberry Blondie

Bright, creamy + berry-forward

Chocolate

Peanut Butter Cup

Belgian dark chocolate

Strawberry Blondie

Belgian white chocolate

Fruit

Peanut Butter Cup

No fruit

Strawberry Blondie

Real freeze-dried strawberries

Build your routine

A few useful additions.

Choose hydration, unflavoured collagen or a crisp snack for more variety.

Product details

Questions customers often ask.

Do these bars need to be refrigerated?

No. The bars are shelf stable and do not require refrigeration. Enjoy them at room temperature, chilled or warmed, depending on the texture you prefer.

How do I warm a bar?

Remove the wrapper before microwaving. Place the bar on a microwave-safe plate and warm for about 10–20 seconds. It can become very soft and gooey, so a fork or spoon may be helpful.

What is the protein source?

Its protein comes from a combination of bovine gelatin, peanut butter and rolled oats. The current package lists 25 g of protein per 65 g package.

What allergen information should I know?

Contains peanuts and soy. Produced in a facility that also processes tree nuts, milk, soy and gluten.

When will my order ship?

Most orders are prepared for shipment within 1–3 business days. Delivery estimates begin once your order has shipped. See the current shipping policy for details.

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