This AIP French onion soup recipe is warm, rich, and simple to make. When I first tried an AIP version of French onion soup, I felt unsure, but one bowl changed everything. The onions become sweet and deep in flavor, even without dairy, grains, or flour. During my own AIP journey, dishes like this helped me feel grounded and safe with clean, gentle food.
In this guide, I’ll show you how to make an AIP-friendly French onion soup using real ingredients, slow heat, and easy steps.
AIP French Onion Soup
Ingredients
Equipment
Method
- Slice the Onions
- Cut onions into thin, even slices. Thin slices help them soften faster and develop deep sweetness.
- Slow-Cook the Onions
- Heat olive oil in a pot over low–medium heat. Add onions and cook slowly for 25–35 minutes, stirring often.
- They should turn soft, golden, and fragrant — not browned or burnt.
- Add Broth and Herbs
- Pour in the beef (or chicken) broth. Add thyme.
- Simmer for 10–15 minutes so the flavors blend.
- Add Arrowroot Slurry
- Mix arrowroot with 1 tablespoon cool water. Stir into the soup.
- It will thicken slightly while staying smooth and clear.
- Taste and Adjust
- Add sea salt as needed. Add more thyme or lemon juice if desired.
- Serve warm.
Notes
- Sweet onions produce the best flavor for AIP onion soup.
- Cook onions low and slow to avoid burning.
- Use beef broth for a deeper, more classic flavor.
- Add roasted mushrooms, cooked beef bits, or parsley for extra AIP-safe depth.
- Soup tastes even better the next day.
What Makes This AIP French Onion Soup Different
This soup keeps everything simple. It uses slow-cooked onions, clean broth, and AIP-safe seasonings to create a rich, classic flavor without dairy, flour, or gluten. Long, gentle heat pulls out the natural sweetness in onions, turning them soft, golden, and full of warm depth.
Here’s what sets this AIP French onion soup recipe apart:
- 100% AIP and Paleo friendly
- Naturally sweet from slow-cooked onions
- No flour, dairy, or grains
- Light on the gut but full in flavor
- Made with clean, simple pantry ingredients
If you’re learning how to make AIP French onion soup, this recipe keeps every step easy and approachable.
AIP French Onion Soup Ingredients
These simple ingredients create a warm, full-flavored bowl without heavy work:
- 2 TBSP extra virgin olive oil
- 4–5 cups sliced onions (sweet onions work well)
- 1 tsp lemon juice (AIP-safe swap for honey/brandy brightness)
- 1 tsp arrowroot flour (for light thickening)
- 4 cups beef bone broth
- 1/2–1 tsp sea salt, to taste
- 1/2 tsp dried thyme (AIP-safe herb)
These ingredients show that you can enjoy classic comfort flavors with a clean, AIP-approved method.
How to Make AIP French Onion Soup (Step-by-Step)
The secret to great onion soup is patience. Slow heat brings out sweetness, depth, and softness.
1. Slice the Onions
Cut onions into thin strips. Thin slices melt into the broth and help the soup develop its classic depth.
2. Cook the Onions Slowly
Add olive oil to a warm pot. Add the onions and cook on low to medium-low heat, stirring often.They will soften, turn golden, and then deepen in flavor.This slow process creates most of the soup’s richness.
3. Add Broth and Herbs
Pour in beef or chicken broth. Add thyme or a bay leaf. Let everything simmer gently so the broth absorbs the sweet onion flavor.
4. Add Arrowroot Slurry
Mix a small spoon of arrowroot with cool water. Add it to the pot and stir.The soup will thicken slightly while staying clear and smooth.
5. Taste and Adjust
Add salt if needed. Add more herbs for fragrance.This step helps you shape the bowl to your own taste preference.
This simple process creates a warm, rich bowl of AIP French onion soup with clean ingredients and deep flavor.
Tips for the Best AIP French Onion Soup
Use Sweet Onions
They caramelize faster and create a naturally rich flavor.
Slice Thinly
Thin slices melt into the broth and give the soup a smooth texture.
Cook Low and Slow
Rushing the onions will make them burn. Gentle heat brings out sweetness.
Choose a Good Broth
Beef broth gives a classic French onion taste.
Chicken broth creates a lighter version.
Add Arrowroot Slowly
Arrowroot thickens very fast. Start with a little, stir well, and add more only if needed.
Taste Before Serving
A small pinch of salt or fresh herb can brighten the whole bowl.
These expert tips give your soup restaurant-style depth with clean AIP ingredients.
Easy Add-Ins and AIP-Friendly Toppings
You can keep the soup simple or add AIP-safe extras to make it a fuller meal.
- Fresh herbs (thyme, parsley)
- Crisp garlic chips for crunch
- Soft cooked beef bits for protein
- Roasted mushrooms for earthy depth
- Green onion tops for brightness
- Extra broth for a deeper, warmer flavor
All add-ins remain fully AIP-approved and enhance the warm, sweet onion base.
How to Serve AIP French Onion Soup
This soup shines when served warm and simple.
Serve Hot
The warmth brings out the sweet onion flavor.
Use Deep Bowls
They retain heat and keep the onions sitting soft at the base.
Add Fresh Herbs on Top
A light sprinkle of parsley or thyme adds color and aroma.
Pair with AIP Sides
Try these easy additions:
- Cooked greens
- Roasted vegetables
- A small piece of roast chicken
- Light salad with lemon
These sides keep the meal balanced and AIP-friendly.
How to Store and Reheat
This AIP French onion soup stores well and tastes even richer the next day.
Store in the Fridge
Cool the soup first. Keep in an airtight container for 3–4 days.
Freeze for Later
Freeze in small jars or freezer-safe tubs.
Leave a little space at the top. Keeps for up to 2 months.
Reheat on the Stove
Warm on low heat and stir often to keep the broth smooth.
Reheat in the Microwave
Heat in short bursts and stir between cycles to prevent uneven texture.
Adjust Thickness
If the broth thickens in the fridge, add a splash of warm broth to smooth it out.
These steps help you enjoy the same warm, sweet flavor even on busy days.
Final Thoughts
This AIP French onion soup recipe is warm, sweet, and full of comfort. It follows AIP rules, but still gives you the depth and richness of classic French onion soup—without dairy or grains.
Once you learn how to make AIP French onion soup, the steps feel simple and repeatable. You can change the add-ins, adjust the broth, or shape the flavors to match your mood.I hope this guide helps you enjoy a calm, nourishing bowl at home.
Sip slow, enjoy the warmth, and let each spoonful feel like gentle comfort.
FAQ: Everything You Need to Know About AIP French Onion Soup
Can I use any type of onion?
Yes. Any onion will work. Sweet onions give the best warm taste. They turn soft and gold in this AIP French onion soup recipe.
Can I make this soup ahead of time?
Yes. This soup keeps well. The taste gets even more sweet the next day. It is great to make ahead when you want calm, easy meals.
What broth works best?
Beef broth gives a deep note. Chicken broth is more light. Both work well in an aip French onion soup and keep the dish clean.
Is this a good AIP onion soup base?
Yes. The soft onions and clear broth make a great base. You can add meat or herbs later. It is simple and safe for AIP.
How do I learn how to make AIP French onion soup in my own style?
Start with this simple method. Then change herbs, broth, or add-ins. Over time, you will find your own way to make an AIP French onion soup recipe that fits your taste.
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I’m Rob Newaz, a passionate home cook who loves creating easy, flavorful, and healthy recipes. I share practical cooking tips and everyday meal ideas to help you cook smarter and enjoy every bite.
