With this easy, homemade gluten-free onion soup mix recipe, you can bring this nostalgic, rich and savory flavor to your recipes without the additives or allergens.

This gluten-free onion soup mix is an easy pantry staple that’s ready to sprinkle into soups, stir into dips or rub onto meats before roasting. It comes together in minutes with a few basic spices and herbs for a fresh, natural flavor.

Unlike store-bought mixes, it’s completely free of gluten, artificial flavors and mystery ingredients. This one is great for eating cleaner, cooking for someone with dietary restrictions and the fresher flavors of using a homemade spice blend. I’ve used it when I don’t have any on hand and need some in a pinch!

What to serve with gluten-free onion soup mix

Onion soup mix is a behind-the-scenes flavor booster. It’s convenient and also kind of a secret weapon for adding a special zing to many dishes using the simplest ingredients.

For a quick snack, stir a few tablespoons into sour cream for to make a fresh, yummy onion dip to go with potato chips or crisp veggie sticks.

Sprinkle it over cubed potatoes before roasting for a deeply seasoned side dish for grilled or baked chicken or a roast beef. You can also add a scoop to homemade soups or stews to enhance their richness without needing to simmer for hours.

If you’re making a cozy weeknight dinner, mix it into ground beef for burgers or meatloaf to enhance the flavor with minimal effort. You can also use it as a dry rub for roast beef or to season a slow cooker pot roast. The savory smells will fill your kitchen long before dinner is served.

Kitchen Equipment Needed

Small bowl
Airtight jar or container for storage

Ingredients needed to make gluten-free onion soup mix

Here’s a breakdown of what goes into this flavorful spice blend and what each contributes:

Dried Onion Flakes: These form the base of the mix, delivering texture and concentrated onion flavor.
Gluten-Free Beef Bouillon Granules: Add savory depth and that classic “soup mix” richness; be sure to use a certified gluten-free version.
Onion Powder: Enhances the overall onion flavor with a smooth, evenly distributed punch.
Garlic Powder: A classic companion to onion, garlic adds warmth and complexity to the blend.
Parsley: Brings a subtle herbal note and a touch of color.
Celery Seed: Adds a slightly peppery, earthy tone that mimics traditional soup bases.
Paprika: Offers a hint of sweetness and smokiness for balance.
Ground Black Pepper: Rounds out the seasoning with a gentle heat.
Salt: Adjust based on taste or dietary preference.
Cornstarch (Optional): Helps thicken sauces or dips made with the mix, similar to store-bought packet results.

Frequently asked questions about this gluten-free onion soup mix

Here are a few common questions about this mix and their answers. If you have a question I haven’t covered, drop it in the comments, and I will reply as soon as I can!

Can I use this mix to make an onion dip?

You can! As noted above, just stir two to three tablespoons of the mix into one cup of sour cream (or dairy-free alternative) and refrigerate for about 30 minutes to allow the flavors to develop.

Is this similar to Lipton’s Onion Soup Mix?

Yes, this is a homemade, gluten-free copycat recipe of that classic mix by Lipton and other brands, minus the preservatives, MSG or hidden gluten ingredients often found in store-bought versions.

How long does it keep?

Stored in an airtight container in a cool, dry place, your spice blend will stay fresh for up to six months. Make sure to keep it away from heat and moisture for the best shelf life.

Can I make it vegetarian or vegan?

You can make this recipe vegetarian or vegan. Simply substitute a gluten-free vegetable bouillon granule in place of the beef bouillon to make the mix completely plant-based.

What else can I use it for besides soup?

This mix is fantastic sprinkled over roasted vegetables, stirred into mashed potatoes, used as a rub for meats or even as seasoning in casseroles and grain dishes like rice or quinoa.

Do I need to use cornstarch?

Cornstarch is totally optional. It’s helpful if you plan to use the mix in sauces or soups and want them to thicken slightly. If you’re avoiding corn, feel free to skip it altogether or substitute with arrowroot powder.

Where can I find gluten-free bouillon?

Look for clearly labeled gluten-free options at health food stores, larger grocery chains or online. Brands like Herb-Ox and Cook’s Delight offer gluten-free varieties. Always be sure to double-check the label.

More Grandma-approved recipes to try

If you enjoyed this recipe for gluten-free onion soup mix, I bet you’ll love these handy recipes, too!

If you mix up a batch of this gluten-free onion soup mix, let me know the ways you use it! I always love to hear about how folks experiment with it.