I enjoy using this homemade French onion soup mix as a reliable replacement for the familiar store-bought mixes. Those commercial packets can be convenient, but they often contain excess sodium and fillers. This homemade version delivers rich, savory flavor and allows you to control the ingredients—perfect for adding depth to meatloaf, pot roasts, stews, or making a quick bowl of soup.
Many packaged mixes rely on beef bouillon, which adds a meaty taste but also unwanted salt and additives. For a cleaner, more nutritious alternative, I use mushroom powder. Mushroom powder contributes umami, a satisfying savory profile, and adds a bit of fiber and trace nutrients. In most recipes it stands in beautifully for beef bouillon without compromising flavor.
Using Mushroom Powder for Umami
Mushroom powder can be purchased or made at home by dehydrating mushrooms and grinding them to a fine powder. I often use dried baby bella mushrooms, dehydrated in an air fryer or dehydrator, then ground to a powder. The resulting mushroom powder blends seamlessly into this soup mix and enhances the overall richness without overwhelming the dish.
The photo below shows a jar of homemade mushroom powder made from baby bellas dried and ground at home:
French Onion Soup Mix Recipe
- 4 teaspoons dried mushroom powder
- 1 teaspoon onion powder
- 3 tablespoons dried onion flakes
- 1 teaspoon garlic powder
- Combine the dried mushroom powder, onion powder, dried onion flakes, and garlic powder in a small bowl. Mix thoroughly until evenly blended.
- To store, transfer the mix to an airtight container and keep it in a cool, dry place. It will stay fresh for several months.
- To make broth: heat 4 cups of water and whisk in the appropriate amount of mix (about 1 to 2 tablespoons per cup, or 4 tablespoons for 4 cups) until dissolved. Adjust to taste for stronger or milder flavor.
This homemade French onion soup mix is versatile: use it to make a quick bowl of soup, sprinkle it into ground meat for meatloaf, add it to slow-cooked roasts, or stir it into stews to boost savory depth. Because you control the ingredients, it’s simple to adjust salt levels, eliminate unwanted additives, and tailor the mix to dietary needs.
Tips for the best results:
- Use a fine mushroom powder for a smooth texture and even distribution.
- If you prefer a stronger onion presence, increase the dried onion flakes or sauté a small amount of fresh onion when preparing the broth.
- Store the mix in a tightly sealed jar away from heat and moisture to preserve flavor and shelf life.
Making your own French onion soup mix saves money and lets you customize flavor and nutrition. Try it once and you’ll appreciate how easily it enhances everyday meals without the drawbacks of many commercial mixes.