Baking with protein powder is one of the most practical ways to increase your daily protein intake — but it requires knowing the rules. Get it wrong and you end up with dry, crumbly results. Get it right and you have genuinely delicious gut-friendly bakes that work for IBS.
The Golden Rules of Protein Baking
Rule 1 — Replace no more than 25% of flour with protein powder. Protein powder behaves very differently from flour. It absorbs liquid faster, has no gluten structure and can make bakes dense and dry if used in excess. A maximum of 25% substitution is the reliable starting point.
Rule 2 — Add extra moisture. For every scoop of protein powder added to a recipe, add an extra tablespoon of liquid — oat milk, coconut oil or egg. Protein powder is highly absorbent and will make your bake dry without compensation.
Rule 3 — Reduce baking time and temperature slightly. Protein powder can cause the outside of bakes to set faster than the interior. Reduce oven temperature by 10°C and check 5 minutes early.
Rule 4 — Use certified Low FODMAP protein. Many protein powders contain sweeteners, gums or fillers that can cause gut reactions even when baked. Using a certified Low FODMAP protein ensures the finished product is as gut-safe as possible.
What Bakes Well with That Protein
Brown rice protein powder — the base of all That Protein products — has a mild, nutty flavour that works beautifully in chocolate, peanut butter and oat-based recipes. It does not have a chalky aftertaste and blends cleanly into batters.
Our best baking recipes: Chocolate Protein Banana Bread, Low FODMAP Protein Flapjacks, Protein Granola Bars and Chocolate Protein Brownie Bites. All on our blog.
Ingredient Swaps for IBS-Safe Baking
- Wheat flour → oat flour or gluten-free flour blend
- Cow's milk → oat milk
- Butter → coconut oil
- White sugar → maple syrup or coconut sugar (Low FODMAP in small amounts)
- Regular protein powder → certified Low FODMAP protein