Peanut Butter Banana Protein Shake: The Biggest, Most Satisfying Recipe On This Blog
Peanut Butter Banana Protein Shake: The Biggest, Most Satisfying Recipe On This Blog
Chocolate, peanut butter and banana is the most reliable flavour combination in the entire smoothie world — and this is the version with 35g of protein in it. At around 435 calories it's a proper meal, not a snack: 35g of protein, 35g of carbs and 5g of fibre. If you're a hard gainer or you routinely skip breakfast, this is the recipe to start with.
Peanut Butter Banana Delight — 35g of protein and 435 calories, thick enough to eat with a spoon.
Some flavour combinations don't need defending. Chocolate, peanut butter and banana is one of them — it's the shake every gym in the world has on the menu, and for good reason. This is that shake, built on ISO Bang Chocolate Cinnamon, with the numbers stated honestly.
And those numbers are big. A banana is about 105 calories, two tablespoons of peanut butter is roughly 190 — so before you've added a scoop or any milk, you're already near 300. The finished shake lands at around 435 calories, 35g of protein and 35g of carbohydrate. That is not a light drink, and it isn't meant to be.
What it is, is the most genuinely useful recipe here for two specific people: hard gainers who struggle to eat enough, and anyone who skips breakfast because there's no time. This shake takes two minutes and delivers more protein and more calories than most people's actual breakfast. If you're eating in a deficit instead, there's a lighter version below — same flavour, a third fewer calories.
Protein, carbohydrate and fat all in one glass, in meaningful amounts. Most protein shakes give you protein and not much else, which is why they leave you hungry. The banana supplies fast carbohydrate, the peanut butter supplies fat and another 7g of protein, and the isolate supplies the bulk of the 35g. That's a meal, not a supplement.
Why you'll love this peanut butter banana shake
- 35g of protein. The highest on this blog, and only 25g of it comes from the scoop.
- The flavour combination everyone already likes. Chocolate, peanut butter and banana needs no persuading.
- Actually replaces a meal. At 435 calories with fat, carbs, protein and 5g of fibre, this is breakfast in a glass.
- Perfect for hard gainers. If eating enough is your problem, drinking your calories is the easiest fix there is.
- Four ingredients, two minutes. No soaking, no zesting, no prep the night before beyond freezing a banana.
- Clean label. Made with ISO Bang — no fillers, no proprietary blends, banned-substance tested.
Getting the banana and the peanut butter right
Freeze the banana — the single best smoothie habit
A frozen banana is what separates a thin, disappointing shake from something that drinks like soft ice cream. Freezing it means you don't need ice, and ice is what waters shakes down as it melts. Peel the banana before freezing — a frozen peel is genuinely impossible to remove — slice it into coins, and keep a bag of them in the freezer. It also solves the problem of bananas going over before you can use them.
Read your peanut butter label
The recipe specifies unsweetened, and that matters more in India than you might expect: a great many peanut butters on shelves here contain added sugar, and some contain palm oil as well. Turn the jar over — the ingredients list should read peanuts, and possibly salt. That's it. A sweetened peanut butter can add several grams of sugar on top of the banana's, which is exactly what this recipe is trying to avoid.
The riper a banana gets, the more of its starch has converted to sugar — a heavily brown-spotted banana is noticeably sweeter than a just-yellow one. If you want to keep the sugar down, use a banana that's ripe but still firm. If you want maximum sweetness and no need for any sweetener at all, use the spotted one.
Ingredients
Four ingredients. The only prep is freezing the banana, and that's optional.
- Trident Nutra ISO Bang — Chocolate Cinnamon1 scoop (30g)
- Banana, ideally frozen in coins1 medium
- Peanut butter, unsweetened2 tbsp
- Unsweetened almond milk1 cup
Which ISO Bang flavour should you use?
Chocolate Cinnamon, without hesitation. Chocolate with peanut butter and banana is one of the most established dessert combinations there is, and the cinnamon adds a warmth that works particularly well against the peanut. This is one of only two recipes on the blog where chocolate is the correct answer rather than a compromise.
If you want a different direction, Cold Coffee Cinnamon gives you a peanut butter mocha — coffee and peanut is an underrated pairing, and it makes the shake taste more like a café drink than a dessert.
How to make a peanut butter banana protein shake
- Use a frozen banana if you have one. Peeled and sliced into coins ahead of time. Fresh works, but you'll want a few ice cubes and the texture won't be as thick.
- Add the almond milk first. Liquid before powder, so nothing packs down under the blades.
- Add the banana, peanut butter and protein. Scrape the peanut butter off the spoon properly — it likes to hide.
- Blend for 45–60 seconds. Peanut butter needs a moment to fully emulsify, or you'll get streaks rather than a smooth shake.
- Pour and dust. A pinch of cinnamon on top, and chopped peanuts if you want the crunch.
Use half a banana and one tablespoon of peanut butter. That brings it to roughly 287 calories, 30g protein and about 9g of sugar — a third fewer calories, and it still tastes like the same shake. This is the version for anyone eating in a deficit.
Nutrition facts
| Nutrient | Amount |
|---|---|
| Calories | 435 kcal |
| Protein | 35 g |
| Carbohydrates | 35 g |
| of which fibre | 5 g |
| Fat | 19 g |
| Sugar (from fruit) | 17 g |
For the lighter version with half a banana and one tablespoon of peanut butter: roughly 287 calories, 30g protein, 11g fat and around 9g of sugar.
Pro tips & tasty variations
- Turn it into a proper gainer. If your goal is size, swap the scoop for Trident Nutra Gain Bang and add a tablespoon of oats. This recipe is already the closest thing here to a mass-gain shake.
- Add oats for staying power. Two tablespoons of rolled oats thickens it and adds slow-release carbohydrate — useful before a long session.
- Swap to dairy milk. Adds around 8g more protein and makes it creamier still.
- Use powdered peanut butter. Roughly a quarter of the fat and calories of the real thing, with most of the flavour — a neat way to cut the calories without cutting the taste.
- Add a pinch of salt. If your peanut butter is unsalted, a few grains lifts both the chocolate and the peanut noticeably.
- Stack your creatine. Trident Nutra Creatine is unflavoured and dissolves straight in — easy to fold into a shake you're drinking daily anyway.
How to store your peanut butter banana shake
Drink it fresh if you can — blended banana browns within a couple of hours and the shake thickens considerably as it stands. If you're making it ahead, keep it sealed and cold, drink within 24 hours, and loosen it with a splash of almond milk before drinking. Better still, pre-portion the frozen banana and peanut butter into a container and blend fresh in the morning; it takes two minutes.
Frequently asked questions
How much protein is in this peanut butter banana shake?
Around 35g, the highest of any recipe on this blog. 25g comes from one scoop of ISO Bang hydrolyzed whey protein isolate, with roughly 8g from the peanut butter and the rest from the banana and almond milk.
Why is this recipe so much higher in calories than the others?
Banana and peanut butter are both calorie-dense. A medium banana is about 105 calories and two tablespoons of peanut butter roughly 190, so those two ingredients alone account for nearly 300. That's what makes this a meal rather than a snack — and it's why there's a lighter version at around 287 calories.
Is this shake low sugar?
Not particularly — around 17g, most of it from the banana, and none of it added. If low sugar is your priority, halve the banana or look at our vanilla almond recipe instead, which comes in at about 2g because it contains no fruit at all.
Should I use a fresh or frozen banana?
Frozen, if you can plan ahead. It makes the shake far thicker and colder without ice, and ice waters a shake down as it melts. Peel and slice the banana before freezing — a frozen peel is impossible to get off.
Does it matter which peanut butter I use?
Yes. Many peanut butters contain added sugar and some contain palm oil. Check the label — it should list peanuts and possibly salt, and nothing else. A sweetened peanut butter adds several grams of sugar on top of the banana's.
Can I use powdered peanut butter instead?
Yes, and it's a good option if you want the flavour without the calories — powdered peanut butter has roughly a quarter of the fat. You'll lose some richness and the shake will be thinner, so a frozen banana helps compensate.
Is this shake suitable for vegetarians and vegans?
It's vegetarian. It isn't vegan, because ISO Bang is a whey protein isolate and whey comes from milk. Isolate is very low in lactose compared with whey concentrate, which is why many people who find regular protein heavy get on better with it.
When is the best time to drink it?
Breakfast, or as a post-workout meal when you want carbohydrate and protein together rather than protein alone. It's also the obvious choice on days you know you'll struggle to eat enough — 435 calories in two minutes is hard to beat.
Fuel it with clean protein
No fillers. No proprietary blends. Just 25g of hydrolyzed whey protein isolate per scoop at 103 calories — banned-substance tested, so your shake is as clean as it is delicious.
Shop ISO Bang Chocolate Cinnamon