Best for baked oats and mug cakes
Prozis
100% Real Casein
1kg bag
Buy 100% Real Casein →Direct from ProzisGet 10% off your order
Back to Blogor buy on Amazon →See all UK alternatives in the live comparison table → 
or buy on Amazon →See all UK alternatives in the live comparison table →
or buy on Amazon →See all UK alternatives in the live comparison table →
Health & Ingredients
Can You Bake With Protein Powder? 5 Recipes That Work
Whether baking destroys protein, which protein powder suits which bake, how much flour to swap, five UK recipes in grams and degrees C, and how to fix dry or rubbery protein bakes.
KE
Kevin, founder of WheyWise
14 October 202610 min read
Ready-made protein pancakes
Prozis
Pancake + Protein
2.5kg bag
Buy Pancake + Protein →Direct from ProzisGet 10% off your order
Best for brownies and pancakes
Prozis
Supreme Whey Protein
907g bag
Buy Supreme Whey Protein →Direct from ProzisGet 10% off your order
Quick answer
Yes, you can bake with protein powder. Heat changes the shape of the protein but does not remove it, though very hot, dry baking with lactose-rich whey can cost some of the amino acid lysine. The rule that makes bakes work is to swap no more than about a quarter of the flour for protein powder and add moisture, such as Greek yoghurt or banana. Whey suits pancakes and brownies, while casein holds moisture better in baked oats and mug cakes, which makes Prozis 100% Real Casein the most useful single tub for baking, at 72p per 25g of protein with code WHEYWISE. Clear whey is made for water, not the oven.
Protein powder can turn pancakes, porridge and brownies into a useful source of protein, but it does not behave like flour. This guide explains what heat does to protein, which powder suits which bake, how much flour to swap, and five recipes written in grams and degrees C, with the protein in each.
The recipes are our own, built on the swap ratios that hold up in published baking tests. Protein per serving is an estimate from typical UK label values.
Does baking destroy protein powder?
No. Baking denatures protein, which means the heat unfolds its shape, but the protein and its amino acids are still there, and digestion unfolds protein anyway. The protein grams in your recipe are the protein grams you eat.
The one real cost is to a single amino acid, lysine, when whey is baked hot and dry with sugar. Whey concentrate contains lactose, and in a 2016 study whey dry-heated with lactose at 130°C for up to 20 minutes, to mimic baking, lost some of its available lysine (Liu et al., 2016, PMID 26524422). A cookie study found the same: replacing some flour with whey protein concentrate increased lysine loss and browning, and more water in the dough slowed it (Pérez Romo-Leroux et al., 2013). Moist bakes, slightly lower oven temperatures and shorter bakes keep the loss small.
Which protein powder is best for baking?
Casein, or a whey and casein blend, is the best protein powder for most baking, because it holds moisture. In one all-flour cupcake test, a whey and casein blend kept the best structure, plain whey came out dry, casein alone was dense and absorbent, and pea protein was crumbly and earthy. Whey concentrate still works well in pancakes, brownies and cookies, where a little chewiness is fine.
| Protein type | Best for | Watch out for |
|---|---|---|
| Whey concentrate | Pancakes, brownies, cookies | Browns quickly, dries out if overused |
| Whey isolate | Shakes and no-bake recipes | Drier than concentrate in the oven |
| Casein, or whey and casein blend | Baked oats, mug cakes, muffins | Thick batter: add liquid gradually |
| Plant protein | Dense bakes, protein balls | Absorbs the most liquid, earthy taste |
| Clear whey | Drinks made with water | Not designed for baking |
For which specific powders suit recipes, see our guide to the best protein powder for smoothies, oats, coffee and baking.
Best for baked oats and mug cakes
Prozis 100% Real Casein
1kg bag
Prozis 100% Real Casein is the most useful single tub for baking: casein keeps baked oats and mug cakes moist, and it costs 72p per 25g of protein with code WHEYWISE.
or compare all UK prices →Best for baked oats and mug cakes
Prozis 100% Real Casein
1kg bagPros
- + Casein holds moisture in the oven better than whey
- + 72p per 25g of protein in the 1kg pouch with code WHEYWISE
- + 80g protein per 100g on the label
- + Chocolate, Cookies and Cream and White Chocolate suit sweet bakes
Cons
- – Thickens batter fast, so add milk a little at a time
- – Only one of three flavours was in stock when we checked
●Nutrition per scoop · 26.4g protein in 33g▼
Protein makes up 80%
of this 33g scoop · 117 kcal total
26.4g
Protein26.4g
Carbs1.4g
Fat0.7g
Other4.5g
How much flour can you replace with protein powder?
Replace about a quarter of the flour with protein powder, and no more than a third. Baking guides that tested it agree on that range, and replacing all of the flour turns cakes dry, dense or gummy. For every 100g of flour in a recipe, use about 75g of flour and 25g of protein powder, and add 2 to 3 tablespoons of extra liquid, more for casein and plant protein.
| Recipe flour | Flour to keep | Protein powder |
|---|---|---|
| 100g | 75g | 25g |
| 200g | 150g | 50g |
| 300g | 225g | 75g |
How do you make protein pancakes?
The quickest protein pancakes come from a ready-made mix: Prozis Pancake + Protein makes a pancake from 25g of mix and 75ml of water, cooked for 1 to 2 minutes a side on a medium heat. It costs about 32p per 25g serving in the 2.5kg bag at £32.18. To make them from scratch, use the recipe below.
Banana protein pancakes (serves 1, about 35g protein)
- 1 ripe banana
- 40g porridge oats
- 2 medium eggs
- 20g whey protein (vanilla or unflavoured)
- 1 tsp baking powder
- A splash of milk, and a little oil for the pan
- Blend everything until smooth, adding milk until the batter pours slowly.
- Rest the batter for 5 minutes so the oats soften.
- Cook small pancakes on a medium heat for 1 to 2 minutes a side, until bubbles appear before you flip.
Ready-made protein pancakes
Prozis Pancake + Protein
2.5kg bag
Prozis Pancake + Protein is the quickest route to protein pancakes: 25g of mix and 75ml of water, 1 to 2 minutes a side, at about 32p a serving in the 2.5kg bag.
or compare all UK prices →Ready-made protein pancakes
Prozis Pancake + Protein
2.5kg bagPros
- + Just add water: 25g of mix and 75ml of water per pancake
- + About 32p per 25g serving in the 2.5kg bag at £32.18
- + Six flavours, including Chocolate Chip and Strawberry Cheesecake
Cons
- – Batter is thin, so cook on a medium heat, not high
- – Check the label for protein per serving before you count it
How do you make protein baked oats?
Protein baked oats work best with casein or plant protein, which stay soft in the oven where whey dries out. Use a little more milk with casein or plant protein, 100 to 120ml, than you would with whey, about 80ml.
Chocolate baked oats (serves 1, about 25g protein)
- 40g porridge oats
- 20g chocolate casein, such as Prozis 100% Real Casein
- Half a ripe banana, mashed
- 100 to 120ml milk
- Half a tsp baking powder
- Heat the oven to 180°C (160°C fan).
- Mix everything in a small ovenproof dish or ramekin.
- Bake for 20 to 25 minutes, until risen and just set in the middle.
How do you make protein brownies?
Protein brownies work with whey concentrate, because a brownie is meant to be dense and fudgy. Keep the protein to about a quarter of the dry mix and use Greek yoghurt for moisture.
Chocolate protein brownies (makes 9, about 7g protein each)
- 80g plain flour
- 30g chocolate whey protein, such as Prozis Supreme Whey Protein in Extreme Milk Chocolate
- 40g cocoa powder
- 100g caster sugar
- 2 medium eggs
- 100g Greek yoghurt
- 60g butter, melted
- Heat the oven to 170°C (150°C fan) and line a 20cm square tin.
- Whisk the eggs, sugar, yoghurt and butter, then fold in the flour, whey and cocoa.
- Bake for 18 to 22 minutes, until the top is set and a skewer comes out with moist crumbs. Cool in the tin before cutting.
Best for brownies and pancakes
Prozis Supreme Whey Protein
907g bag
Prozis Supreme Whey Protein suits pancakes and brownies, and its Unflavoured version works in any recipe, at £1.22 per 25g of protein with code WHEYWISE.
or compare all UK prices →Best for brownies and pancakes
Prozis Supreme Whey Protein
907g bagPros
- + Whey concentrate, the type that works in pancakes and brownies
- + Unflavoured, French Vanilla and Extreme Milk Chocolate suit most recipes
- + £1.22 per 25g of protein in the 907g pouch with code WHEYWISE
Cons
- – Browns quickly, so bake a little cooler or shorter
- – Dries out in cakes if you use more than a quarter of the flour
●Nutrition per scoop · 24g protein in 30g▼
Protein makes up 80%
of this 30g scoop · 112 kcal total
24g
Protein24g
Carbs1.8g
Fat1g
Other3.2g
How do you make a protein mug cake?
A protein mug cake takes about a minute in the microwave and works best with casein or a whey and casein blend. Use a wide mug, because it rises to about double.
Chocolate protein mug cake (serves 1, about 19g protein)
- 25g self-raising flour
- 15g chocolate casein or whey and casein blend
- 1 tbsp cocoa powder
- 60ml milk
- 1 tbsp Greek yoghurt
- Mix everything in a wide mug until there are no dry pockets.
- Microwave for 60 to 75 seconds; the top should be just set.
- Rest for a minute before eating. Overcooking makes it rubbery.
How do you make no-bake protein balls?
No-bake protein balls avoid heat altogether, which makes them the one recipe where any protein powder works, including plant protein.
Peanut butter protein balls (makes 16, about 6g protein each)
- 150g porridge oats
- 60g protein powder, such as Prozis Vegetable Protein Freaking Good
- 120g smooth peanut butter
- 60g honey or maple syrup
- 2 to 4 tbsp milk
- Mix the oats and protein powder, then stir in the peanut butter and honey.
- Add milk a spoonful at a time until the mix holds together when squeezed.
- Roll into 16 balls and chill for at least 30 minutes. They keep for a week in the fridge.
For no-bake and dairy-free recipes
Prozis Vegetable Protein Freaking Good
750g bag
Prozis Vegetable Protein Freaking Good suits dairy-free and no-bake recipes at 67p per 25g of protein with code WHEYWISE. Give it extra liquid and strong flavours.
or compare all UK prices →For no-bake and dairy-free recipes
Pros
- + Plant protein for dairy-free protein balls and baked oats
- + 67p per 25g of protein in the 750g pouch with code WHEYWISE
- + 76g protein per 100g on the label
Cons
- – Absorbs more liquid than whey, so add milk gradually
- – Plant protein tastes earthier in plain bakes: pair it with chocolate or peanut butter
●Nutrition per scoop · 22.8g protein in 30g▼
Protein makes up 76%
of this 30g scoop · 112 kcal total
22.8g
Protein22.8g
Carbs2.9g
Fat1g
Other3.3g
Why are my protein bakes dry or rubbery?
Protein bakes go dry or rubbery for three reasons: too much protein powder, too little moisture, or too much heat. Most fixes are small changes to the same recipe.
| Problem | Likely cause | Fix |
|---|---|---|
| Dry, crumbly | Too much protein, too little liquid | Swap a quarter of the flour at most, add yoghurt or banana |
| Rubbery | Overcooked | Bake 5 to 10 minutes less, or microwave in shorter bursts |
| Burnt top, raw middle | Whey browns fast | Lower the oven by 10 to 15°C |
| Dense, flat | No lift, overmixed | Add baking powder, fold gently |
| Too sweet | Flavoured powder is already sweetened | Cut the recipe's sugar, or use unflavoured powder |
For more on protein types, see whey isolate vs concentrate, and to compare casein prices, the casein comparison. For everything else Prozis sells, see our Prozis review.
Bottom line: baking does not destroy protein. Swap about a quarter of the flour, add moisture, and bake a little cooler. Use casein such as Prozis 100% Real Casein for baked oats and mug cakes, whey for pancakes and brownies, and keep clear whey for drinks.
Frequently asked questions
Can you bake with protein powder?
Yes. Baking changes the shape of the protein, which is called denaturation, but the protein is still there and still counts towards your daily total. Swap no more than about a quarter of the flour for protein powder and add moisture, or the bake turns dry and rubbery.
Does heating protein powder destroy it?
No, but very hot, dry baking can reduce its quality a little. Studies of whey heated with lactose, the milk sugar in whey concentrate, found a loss of available lysine, one of the essential amino acids, at 130°C for up to 20 minutes. Moist bakes, lower temperatures and shorter times keep that loss down.
Which protein powder is best for baking?
Casein, or a whey and casein blend, holds moisture best in cakes, muffins, baked oats and mug cakes. Whey concentrate works in pancakes, brownies and cookies but dries out if you use too much. Plant protein absorbs the most liquid and suits dense bakes. Clear whey is made to dissolve in water and is not designed for baking.
How much protein powder can replace flour?
About a quarter of the flour, and no more than a third. Replacing all of it makes bakes dry, dense or gummy, depending on the protein. Add extra liquid as you add protein powder, especially with casein and plant protein.
Can you put clear whey in baking?
We would not. Clear whey is processed to dissolve into a thin, juice-like drink in water, and we found no tested source showing it bakes well. Use a whey concentrate or casein instead.
Related reading
Health & Ingredients
Why Does My Protein Bar Taste Artificial? Ingredients to Avoid
Why protein bars taste artificial and cause bloating: maltitol, sucralose, polydextrose, chicory fibre, IMO and collagen explained, plus which Myprotein, Protein Works and Bulk bars skip sweeteners, palm oil and seed oils. Ingredient lists.
8 min readHealth & Ingredients
Can You Mix Creatine With Protein Powder? Cost Per Day
Whether creatine and protein powder can go in the same shake, what the research says about taking them together, when to drink it, and what the combination costs per day, checked September 2026.
6 min readHealth & Ingredients
What Is in Pre-Workout, and What Does It Cost?
The ingredients in a typical UK pre-workout, what the evidence says caffeine, citrulline and beta-alanine do, when to take it, and the price per serving of Applied Nutrition ABE and Myprotein Origin, checked September 2026.
7 min readFind your cheapest protein
774 products compared from 182 brands
Sorted by best value per 25g of protein.
Compare all products