Gluten-Free French Onion Soup Mix
If you need a gluten-free French onion soup mix but the supermarket packet isn’t safe -this homemade version is your answer. It tastes just like the classic French onion soup mix packets, but it’s made with simple pantry spices and contains no fillers, no hidden gluten and no additives.
It takes 5 minutes to make, stores well, and works in dips, slow cooker meals, casseroles, rissoles and tray bakes.
Why Make Your Own Gluten-Free French Onion Soup Mix?
Many store-bought soup mixes:
- Contain wheat starch,
- Include anti-caking agents,
- Have vague ‘may contain gluten’ warnings
So making our own means:
- You control the ingredients,
- You adjust the salt level,
- You always have it on hand,
- It’s more budget-friendly
And honestly? It tastes better too.
INGREDIENTS TO MAKE GLUTEN-FREE FRENCH ONION SOUP MIX
- dried onion flakes*
- onion powder
- garlic powder
- dried parsley
- celery salt
- fine salt
- sweet paprika
- cracked black pepper
*Important – do not substitute onion flakes with extra onion powder. The flakes provide texture and that classic onion flavour.
HOW TO MAKE YOUR OWN FRENCH ONION SOUP MIX
- Add all ingredients to a large bowl.
- Stir thoroughly until evenly combined.
- Transfer to an airtight jar.
- Store in a cool, dry place for up to 6 months.
SERVING SIZE
Most supermarket packets are around 35–40g (1.2–1.4 oz).
3 tablespoons of this homemade mix will replace one standard packet.
Perfect for:
- French onion dip
- Slow cooker beef
- Chicken casseroles
- Rissoles and meatballs
- Roast potatoes
- Savoury mince
Need Just One Serve?
If you don’t want to make the full batch and just need enough for one recipe, here’s your single-serve version.
This equals one packet (about 2½–3 tablespoons total).
1-Serve Gluten-Free French Onion Soup Mix
- 2 tablespoons dried onion flakes
- 1 teaspoon onion powder
- ¾ teaspoon garlic powder
- ½ teaspoon dried parsley
- ¼ teaspoon celery salt
- ¼ teaspoon fine salt
- Pinch sweet paprika
- Pinch cracked black pepper
Mix together and use immediately.
Gluten-Free French Onion Soup Mix
Ingredients
- 1¼ cups dried onion flakes
- 2 tablespoons onion powder
- 4 teaspoons garlic powder
- 1 tablespoon dried parsley
- 2 teaspoons celery salt
- 2 teaspoons fine salt
- 1 teaspoon sweet paprika
- 1 teaspoon cracked black pepper
Instructions
- Add all ingredients to a mixing bowl.
- Stir well until evenly combined.
- Transfer to an airtight jar.
- Store in a cool, dry place for up to 6 months.
Recipe Notes:
- 3 tablespoons equals one standard soup mix packet (35 – 40g / 1.2 – 1.4 oz).
- Do not substitute onion flakes for onion powder – the flakes provide necessary texture and flavour.
- For a finer texture for use in a particular recipe, you can pulse the mix briefly in a food processor.
Nutrition Information:
FAQ’s
Yes. If you prefer a more powdery texture:
Pulse the mix briefly in a food processor (just a few quick pulses).
Do not over-blend though – you still want small visible onion pieces.
Not always. Some brands contain wheat starch or are processed on shared equipment. And a lot of packet mixes just state ‘May contain gluten’ which is too risky. Always check labels carefully – or make your own to be safe.
Yes. You can lower or omit added salt depending on your preference.
Most supermarket packets are around 35-40 grams (or 1.2 to 1.4 oz). If you use 2.5 to 3 tablespoons of this homemade mix, it replaces one standard packet.
Store in an airtight container, keeping it away from moisture and heat. Best used within 6 months for the peak flavour.
