A slow cooker is one of the friendliest appliances you can own on a low FODMAP diet. Long, gentle cooking builds deep savoury flavour from herbs, spices, stock and time — the exact things you fall back on once garlic and onion are off the table. Every recipe below is free of garlic bulb, onion, wheat and honey, and each one lists the portion that keeps it inside Monash University low FODMAP thresholds.
Key Takeaways
- Slow cooking does not reduce FODMAPs. Fructans in onion and garlic are water-soluble, so they leach straight into the sauce and stay there. Leaving the onion in whole does not make it safe.
- Build flavour with garlic-infused oil, spring onion greens, leek greens, chives, herbs, tomato paste, ginger and dry spices instead.
- Check stock, curry paste, stock cubes and sauces for onion powder, garlic powder, inulin/chicory root, honey and high-fructose corn syrup.
- Portion size still decides safety. Potato and rice are unlimited; sweet potato is capped at about ½ cup and canned lentils at ½ cup, drained and rinsed.
- Use lactose-free milk or cream for creamy dishes, and add dairy in the last 30 minutes so it does not split.
Before You Start: 5 Rules for Low FODMAP Slow Cooking
- Swap the aromatics. Where a recipe says "1 onion, 3 cloves garlic", use 2 tbsp garlic-infused olive oil plus the green tops of 2 spring onions or 1 leek. You can look up any ingredient's status on our low FODMAP foods hub.
- Fix the stock. Most supermarket stocks list onion and garlic. Use a certified low FODMAP stock, or make your own with carrot, celery (max 1/4 stick per serve), bay, peppercorns and herbs.
- Add greens late. Spring onion and leek greens lose their flavour over 8 hours — stir them in during the final 20 minutes.
- Thicken at the end. Slow cookers do not reduce liquid. Whisk 1 tbsp cornflour with cold water and stir it in for the last 30 minutes on high.
- Portion into containers straight away. Cooling and refrigerating cooked rice and potato raises resistant starch, which most people tolerate fine, but freeze in single serves so you never over-portion a high-FODMAP-risk ingredient like sweet potato.
Not sure whether an ingredient fits? Run it through our FODMAP food checker before you load the pot.
1. Slow Cooker Beef and Carrot Stew
The workhorse recipe. Brown 700 g diced beef chuck in garlic-infused olive oil, then add 4 sliced carrots, 3 diced potatoes, 2 tbsp tomato paste, 2 bay leaves, thyme and 700 ml low FODMAP beef stock. Cook on low for 8 hours. Thicken with cornflour at the end and stir through chopped parsley and spring onion greens.
Portion: unlimited beef and potato; keep carrot to about 1 medium carrot per serve and celery out entirely if you are in elimination phase.
2. Creamy Chicken and Rice Soup
Comfort in a bowl and one of the gentlest things you can eat during a flare. Combine 500 g chicken thighs, 1 diced carrot, 1/2 cup white rice, 1.2 L low FODMAP chicken stock, thyme and pepper. Cook on low for 6 hours, shred the chicken, then stir in 1/2 cup lactose-free cream in the last 20 minutes. Finish with chives.
Portion: rice and chicken are unlimited; lactose-free cream keeps this safe where regular cream would push lactose too high. More bowls like this are in our low FODMAP soup recipes collection.
3. Garlic-Free Pulled Pork
Rub 1.5 kg pork shoulder with smoked paprika, cumin, mustard powder, brown sugar, salt and pepper. Sit it on 1 cup low FODMAP stock with 2 tbsp maple syrup and 1 tbsp apple cider vinegar. Cook on low for 9 hours, shred, then toss with our homemade low FODMAP BBQ sauce.
Portion: pork is FODMAP-free; cap maple syrup at 2 tbsp per serve and serve on gluten-free rolls.
4. Maple Ginger Chicken Thighs
Whisk 3 tbsp maple syrup, 2 tbsp gluten-free soy sauce, 1 tbsp grated ginger, 1 tsp rice vinegar and 1 tbsp garlic-infused oil. Pour over 8 bone-in chicken thighs and cook on low for 5 hours. Add 200 g trimmed green beans for the final 45 minutes and scatter with spring onion greens.
Portion: 15 green beans per serve stays low FODMAP; ginger is unlimited. Check portions of any side using our portion size guide.
5. Low FODMAP Beef Chilli
Chilli without beans still tastes like chilli. Brown 600 g beef mince, then add 1 diced red capsicum, 1 can chopped tomatoes, 1/2 cup drained canned lentils, 2 tsp cumin, 2 tsp paprika, 1 tsp oregano, 1 tsp cocoa and 1 tbsp garlic-infused oil. Low for 7 hours.
Portion: 1/2 cup canned lentils per serve (drained and rinsed — the GOS leaches into the liquid), 1/2 medium capsicum, 1/2 cup canned tomato.
6. Lamb and Rosemary Casserole
Toss 800 g diced lamb shoulder in cornflour, salt and pepper, then slow cook with 4 quartered potatoes, 2 carrots, 2 rosemary sprigs, 1 tbsp tomato paste, 500 ml low FODMAP stock and a splash of red wine. Low for 8 hours until the lamb falls apart.
Portion: unlimited lamb and potato; red wine is low FODMAP at 1 standard drink but alcohol is a common independent gut trigger, so leave it out if you are sensitive.
7. Turkey Meatballs in Tomato Sauce
Mix 500 g turkey mince with 1 egg, 1/4 cup gluten-free breadcrumbs, grated parmesan, oregano and chopped chives. Roll into balls, drop into our low FODMAP marinara sauce and cook on low for 5 hours. Serve over gluten-free spaghetti with basil.
Portion: 1 cup cooked gluten-free pasta per serve; parmesan is naturally very low in lactose. Find more in our low FODMAP pasta recipes guide.
8. Slow Cooker Chive Mashed Potatoes
Put 1.5 kg peeled, chopped potatoes in the cooker with 1 cup low FODMAP stock and cook on high for 4 hours. Mash in the pot with 60 g butter, 1/2 cup lactose-free milk, salt, pepper and a handful of chives. No boiling, no draining, no watching.
Portion: potato is unlimited. Butter is essentially lactose-free; use lactose-free milk rather than regular to keep the whole batch safe.
9. Lactose-Free Rice Pudding
Combine 3/4 cup arborio rice, 1 L lactose-free milk, 3 tbsp caster sugar, 1 tsp vanilla and a cinnamon stick. Cook on low for 3 hours, stirring twice. Top with strawberries.
Portion: 10 medium strawberries is a generous low FODMAP serve. Avoid dried fruit toppings such as sultanas, which are high in fructans and fructose.
10. Warm Strawberry Oat Crumble
Layer 500 g halved strawberries with 1 tbsp cornflour and 2 tbsp maple syrup, then top with a rubbed mix of 1 cup rolled oats, 1/2 cup gluten-free flour, 80 g butter and 1/4 cup brown sugar. Cook on high for 2 hours with a tea towel under the lid to catch condensation.
Portion: 1/2 cup cooked oats per serve. Read the detail in our guide to whether oats are low FODMAP.
11. Carrot and Ginger Soup
Slow cook 800 g sliced carrots with 1 tbsp grated ginger, 1 tbsp garlic-infused oil, 1 L low FODMAP vegetable stock, salt and white pepper for 6 hours on low. Blend smooth and swirl in lactose-free cream.
Portion: carrot is low FODMAP in generous serves, but 800 g across 4 bowls keeps it comfortable. Ginger adds warmth with zero FODMAP load.
Slow Cooker Portion Reference
| Ingredient | Low FODMAP serve | Watch out for |
|---|---|---|
| Potato | Unlimited | Nothing — the safest slow cooker filler |
| White rice | Unlimited | Pre-seasoned rice mixes contain onion powder |
| Carrot | 1 medium | Fine in most volumes |
| Sweet potato | 1/2 cup (75 g) | Becomes high FODMAP above this |
| Canned lentils | 1/2 cup, drained | Never use the canning liquid |
| Green beans | 15 beans | High in sorbitol above ~20 beans |
| Red capsicum | 1/2 medium | Green capsicum is safer in bulk |
| Canned tomato | 1/2 cup | Passata sauces often add onion/garlic |
| Maple syrup | 2 tbsp | Honey and agave are not substitutes |
| Lactose-free milk/cream | 1 cup | Regular milk stacks lactose fast in soups |
6 Mistakes That Ruin a Low FODMAP Slow Cooker Meal
- Using standard stock cubes. They are the single most common hidden source of onion and garlic in slow cooking.
- Leaving onion in "for flavour" and removing it later. Fructans have already dissolved into the liquid. The dish is high FODMAP.
- Adding cream at the start. It splits over 8 hours and can concentrate lactose as liquid evaporates from the lid seal.
- Doubling the sweet potato. Easy to do in a big batch, and it quietly pushes a whole pot over threshold.
- Not rinsing canned legumes. Draining alone is not enough — rinse under running water for 30 seconds.
- Serving on wheat bread or pasta. The slow cooker part can be perfect and the side dish undoes it. Use gluten-free.
Frequently Asked Questions
Does slow cooking break down FODMAPs?
No. Heat does not destroy fructans, GOS, lactose, sorbitol or mannitol. Long cooking only moves water-soluble FODMAPs from the vegetable into the sauce, which is why removing whole onion at the end does not help.
Can I use garlic-infused oil in a slow cooker?
Yes. Fructans are not oil-soluble, so infused oil carries flavour without FODMAPs. Add half at the start and half at the end, since long cooking dulls the aroma.
What stock is safe?
A certified low FODMAP stock, or homemade stock built on carrot, herbs, bay and peppercorns. Read labels for onion powder, garlic powder, vegetable powder, yeast extract blends and chicory root fibre.
How do I get depth of flavour without onion?
Brown your meat properly first, use tomato paste, smoked paprika, a small piece of parmesan rind, gluten-free soy sauce, and finish with fresh herbs and spring onion greens. Acid at the end — lemon or vinegar — makes everything taste more finished.
Are slow cooker meals good for IBS flares?
Often yes, because soft, well-cooked, low-fat meals are easier to digest. Keep fat moderate during a flare, since high-fat meals can trigger symptoms independently of FODMAPs.
Can I freeze these?
All eleven freeze well except the mashed potato, which goes grainy. Freeze in single serves so portions stay controlled.
Where to Go Next
- Browse every dish in our low FODMAP recipes library.
- Check any ingredient on the low FODMAP foods hub.
- Read the phase-by-phase low FODMAP guides.
- Try the recipe converter and other tools to make your own family recipes gut-friendly.
Medical disclaimer: This article is for general information only and is not medical advice. FODMAP tolerance is individual. Please work with a registered dietitian before starting, modifying or ending a low FODMAP diet, and speak to your doctor about persistent digestive symptoms.
