Promix Nutrition
Birthday Cake
TL:DR
In 2 Sentences
A rare crispy‑puff bar built on whey and egg whites that uses real sugar and plant‑based colors—no artificial sweeteners—yet still delivers 15g of protein at just 150 calories.
When to choose Promix Nutrition Birthday Cake
A light pre‑workout or mid‑afternoon bite for people who want protein without heaviness and prefer real sugar over sucralose or stevia. Also a solid pick if you avoid peanuts and tree nuts in ingredient lists (it does contain dairy, egg, and coconut).
What's in the Promix Nutrition bar?
Meet Promix Nutrition’s Birthday Cake Protein Bar: a lighter, 150‑calorie snack built around a whey isolate + concentrate blend, with a little egg white for structure.
The birthday‑cake flavor leans on “natural flavor” with gentle sweetness from cane sugar and tapioca syrup, while the cheerful confetti look comes from plant‑based colors like vegetable juices, spirulina, annatto, and turmeric.
Carbs skew refined (cassava‑based starch and syrup) but are cushioned by soluble fibers (tapioca fiber and chicory inulin), and the fat is kept low with small amounts of palm and coconut oils—used mainly to set texture rather than to drive calories.
- Protein
- 15 g
- Fat
- 4 g
- Carbohydrates
- 17 g
- Sugar
- 6 g
- Calories
- 150
Protein
1515MIDProtein comes primarily from whey protein isolate and concentrate, with egg whites playing a supporting role. Whey is a complete, fast‑digesting dairy protein; using isolate keeps lactose low while concentrate adds body and texture. At 15g (about average for bars), you get a clean, high‑quality amino acid profile without a heavy calorie load.
Fat
49LOWOnly 4g of fat, mostly from palm oil, palm kernel oil, and coconut oil—semi‑solid plant fats chosen to hold the bar’s structure. These are higher in saturated fat than oils like olive or nut butters, but the overall amount is small. If you’re watching saturated fat sources, note the trade‑off: tidy texture, minimal fat.
Carbs
1720MIDCarbs are mainly cassava‑derived—tapioca starch and tapioca syrup—backed by soluble fibers (tapioca fiber and chicory inulin) and a bit of glycerin for softness. That makes this more of a “refined carbs with added fiber” bar than a whole‑food carb bar. Expect quicker energy than oats or dates would deliver, tempered somewhat by the added fiber and protein.
Sugar
64MIDThe 6g of sugar come from refined sources—tapioca syrup and cane sugar—rather than fruit. There are no artificial sweeteners; glycerin adds moisture and a subtle sweetness without counting as sugar. The result is a moderate sweetness that will feel quicker on energy than fruit‑based sugars, but not overpowering.
Calories
150210LOWWith calories concentrated in whey protein and cassava‑based carbs—and very little from fat—this bar lands at a snack‑like 150 calories (on the low end for the category). It suits a light pre‑ or post‑workout bite or a between‑meal hold‑over rather than a full meal replacement.
Vitamins & Minerals
You get about 15% of the daily value for calcium, likely from added calcium carbonate with a small assist from the whey. Beyond that, vitamins and minerals are modest—this bar’s nutrition is about macros, not micronutrient fortification.
Additives
Functionals here are familiar and purposeful: sunflower lecithin for blending, glycerin to keep things soft, agar for structure, and soluble fibers for texture and lower net carbs. Plant‑based colors (vegetable juices, spirulina, annatto, turmeric) and a trace of carnauba wax finish the look. It’s a tidy, modern processed‑bar toolkit—more engineered than whole‑food, but not packed with artificial sweeteners or dyes.
Ingredient List
Cow's milk whey
Cow's milk whey
Cassava root
Limestone and chalk
Sunflower seeds
Cassava starch
Cassava root starch
Fats and oils
Chicory root
Red seaweed
What are people saying?
Sources
Range
“I love these ProMix Protein Puff Bars. They taste kind of like a rice crispy bar. The chocolate chip is great. I also like the coconut, though the chocolate chip are better. I haven’t yet tried the other flavors.”
“I actually really like the promix bars because they don't taste super sweet (and I hate bars with artificial sweetener). I also find them more filling than other bars, probably bc they're not too sweet.”
“The promix are a little more bang for your calories”
Main Praise
Fans keep coming back for the cereal‑treat nostalgia without the sucralose or stevia aftertaste. Several reviewers say the sweetness is measured rather than cloying, which makes the bar feel more “snack” than “candy” and easier to eat before a workout.
The macro math is compelling: 15g of protein for roughly 150 calories feels like good tradecraft, and more than one person called it “bang for your calories.
” Editors at SELF, EatingWell, and Health echoed the enthusiasm, praising the crunchy texture, the absence of sugar substitutes, and the way it satisfies a craving without becoming a sugar bomb.
Even those who don’t love super-sweet bars appreciated that this one stays in the “light and airy” lane and tends to sit well when eaten close to training.
Main Criticism
If you read “like a Rice Krispies treat” and picture marshmallow pull, you’ll likely be disappointed. A share of reviewers call the texture drier or a bit crumbly, with puffs that can feel firmer than puffed rice; a couple mentioned a chalky whey note.
Some detect a distinct coconut aroma or flavor (there is coconut oil), which not everyone loves. A few also flagged that chicory inulin—one of the fibers used for texture—can bother sensitive stomachs.
And while media roundups were positive, they also hinted at a price premium compared with big‑box bars.
The Middle Ground
Here’s where expectations matter.
One Redditor praised the bars for not being overly sweet and said they’re more filling precisely because of that; on the flip side, an Amazon reviewer flatly called them dry and powdery, while another, Eric, felt the icing was the only tasty part.
Both experiences can be true. This is a low‑fat, whey‑forward crispy bar (4g fat for structure, not goo), so you get snap over stretch and a cleaner finish over candy‑bar decadence.
The coconut note some people taste isn’t surprising—coconut oil is in the mix—and if that flavor rubs you the wrong way, you might want a different flavor than Birthday Cake.
Meanwhile, health editors who intentionally compared lots of options gave Promix top marks for the very things some detractors dislike: restrained sweetness, no artificial sweeteners, and a crisp that reads nostalgic but not sticky.
The truth lands here: it’s engineered like a modern protein bar, not a bake‑sale dessert, and when you approach it that way, it does its job well.
What's the bottom line?
Promix’s Birthday Cake Protein Puff Bar is a clever compromise: cereal‑bar crunch, real‑sugar sweetness, and 15g of complete whey protein in a 150‑calorie package. If you want a pre‑lift bite or a desk‑drawer snack that won’t sit heavy—and you prefer to skip sucralose and stevia—it’s an easy win. The ingredient list avoids peanuts and tree nuts, though it does include dairy, egg, and coconut.
Just know what you’re buying. This isn’t a marshmallow square; it’s a crispy whey bar with a lighter, drier bite by design, and a coconut whisper that some palates notice. If that sounds like your lane, it delivers steady energy, a tidy ingredient approach, and a nostalgic crunch that’s hard to find in protein bars.
Condensed listicle blurb: A crispy, birthday‑cake‑flavored puff bar with 15g protein for 150 calories—and no artificial sweeteners. Think cereal‑treat vibes without the marshmallow goo; moderately sweet, pleasantly crunchy, and easy pre‑workout. Watch for a mild coconut note and a drier bite, plus chicory inulin if your stomach is sensitive.