Baked vs no-bake: the trade-off
- Baked granola (160–180°C):Phycocyanin loss: 80–95%. Everything else preserved: protein (heat-stable), iron, zinc, GLA, beta-carotene, zeaxanthin, B vitamins (except thiamine, 20–30% loss). Taste masking: excellent — Maillard browning products from oat and nut proteins completely dominate any spirulina flavour.
- No-bake raw granola (below 40°C dehydrator or no heat):Phycocyanin: fully preserved. Taste masking: requires stronger flavour ingredients (cacao, vanilla, cinnamon) since no Maillard browning occurs. Texture: less crispy than baked, more chewy.
For daily spirulina granola as a general nutritional vehicle: baked is the practical choice — it’s easier to make large batches, stores well, and tastes better. For maximum phycocyanin retention: use no-bake and add spirulina as a coating at the end.
Classic baked spirulina granola
Makes 500 g (10 servings, 1 g spirulina each).
- 300 g rolled oats
- 100 g mixed nuts (almonds, walnuts, cashews), roughly chopped
- 50 g pumpkin seeds
- 3 tbsp coconut oil, melted
- 3 tbsp maple syrup or honey
- 10 g spirulina powder
- 1 tsp cinnamon
- ½ tsp vanilla extract
- Pinch of salt
Mix oats, nuts, seeds, spirulina, cinnamon, and salt. Add melted coconut oil, maple, and vanilla — mix until everything is evenly coated. Spread on a lined baking tray. Bake at 160°C (fan) for 20–25 minutes, stirring once at 12 minutes. Cool completely before storing — it crisps as it cools.
Add dried fruit (cranberries, apricots, raisins) after baking — not during, as dried fruit burns. The spirulina gives a subtle green tint to the oats after baking; by the time it’s browned, the colour is a warm olive-green that looks like a matcha or herb granola.
Cacao no-bake spirulina granola
Preserves phycocyanin fully. The cacao and coconut combination masks spirulina at 1.5 g per serving.
- 250 g rolled oats
- 80 g desiccated coconut
- 60 g almond butter
- 3 tbsp raw cacao powder
- 3 tbsp honey or maple syrup
- 2 tbsp coconut oil
- 15 g spirulina powder
- 1 tsp vanilla
- Optional: cacao nibs, hemp seeds
Warm almond butter, coconut oil, and honey in a bowl over warm water until liquid (keep below 40°C — use a thermometer or stop when just melted). Add cacao and spirulina — mix until uniform. Fold in oats, coconut, and any additions. Press into a lined tray or form into clusters on parchment. Refrigerate for 1–2 hours to set.
Store in the fridge — no-bake granola needs refrigeration to maintain structure (the coconut oil sets when cold). Can be frozen in portions.
Mango coconut tropical granola
A lighter baked granola where tropical flavours mask spirulina. Best for summer eating with yoghurt or coconut milk.
- 300 g rolled oats
- 80 g macadamia nuts, roughly chopped
- 50 g shredded coconut
- 3 tbsp coconut oil
- 3 tbsp honey
- Zest of 1 lime
- 10 g spirulina powder
- ½ tsp turmeric
Combine dry ingredients including spirulina and turmeric (turmeric adds another layer of warm flavour and a golden colour that combines with spirulina’s green to produce an earthy ochre). Mix wet ingredients, combine, bake 160°C for 20 minutes. After cooling, add 80 g dried mango pieces and 30 g freeze-dried pineapple.
Iron absorption strategy
Granola has characteristics that affect spirulina’s iron bioavailability:
- Phytate in oats:Rolled oats contain phytic acid that reduces non-haem iron absorption by up to 60%. Soaking oats overnight before making granola activates phytase, reducing phytate by 40–60% and significantly improving iron bioavailability.
- Pair with vitamin C:Serve granola with fresh strawberries, orange slices, or kiwi — the vitamin C (50–100 mg) overrides phytate inhibition and increases non-haem iron absorption 2–3×.
- Avoid with dairy milk:Calcium in milk inhibits iron absorption. Use oat milk, almond milk, or coconut milk if iron absorption is a priority — or eat granola first and have dairy separately.
