Homemade Onion Soup Mix & Spinach Dip

Homemade Onion Soup Mix & Spinach Dip

This spinach dip is made with gluten free homemade onion soup mix. Serve it with fresh vegetables or corn chips for a crowd favorite appetizer.

A close up of spinach dip in a bread bowl on brown surface

As I understand it, Lipton Onion Soup Mix, which I grew up using to make spinach dip, used to be gluten free–until they started adding a barley derivative to the product and bye-bye gluten free. But if you look at the ingredient list of the product, it’s not much more than onion, salt, a touch of sugar, and starch.

It does boast dehydrated onions, but we can get around that quite easily in our homemade onion soup mix. Oh, and in case you’re wondering, I served it in one bread bowl made from the No-Rye “Rye” Bread from page 101 of GFOAS Bakes Bread—and another made from the Lean Crusty White Sandwich Bread on page 43. You really just want a crusty bread, and those are stellar examples.

Bowls of ingredients for spinach dip and a big bowl of spinach dip on wooden surface

Now, for our homemade onion “soup mix,” in place of the dehydrated onions, I just minced and sautéed a small yellow onion. To give the minced garlic more bite, I mince it very fine, and then use the flat side of a large knife to press the garlic and a bit of kosher salt into a paste.

This method releases all the oils in the garlic, and I much prefer it, but of course you could always sauté it briefly when you cook the minced onions. Your choice!

Bread bowl on left and close up of celery with spinach dip on right

Since spinach dip really does get better if it sits in the refrigerator for at least an hour, and even better at least a day, this is a great make-ahead option. The longer you let it sit, the better the crusty bread it’s sitting in will taste, too. Happy D.I.Y. Friday!

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Prep time: Cook time: Yield: About 3 cups spinach dip


For the homemade onion soup mix
2 teaspoons onion powder

1 teaspoon kosher salt

1 tablespoon (9 g) cornstarch

1 tablespoon (12 g) granulated sugar

For the spinach dip
16 ounces chopped frozen spinach

1 tablespoon (14 g) extra-virgin olive oil

1 small yellow onion, peeled and minced

2 medium carrots, peeled and shredded

1/3 cup (75 g) mayonnaise

1 1/2 cups (336 g) sour cream

1 1/2 teaspoons gluten free Worcestershire sauce

1 recipe homemade onion soup mix

1/4 teaspoon freshly ground black pepper

2 ounces Parmigiano-Reggiano cheese, finely grated

2 stalks celery heart, chopped fine

2 cloves garlic, peeled and minced very fine

1/4 teaspoon kosher salt


  • In a small bowl, combine all of the ingredients for the homemade onion “soup mix,” and whisk to combine. Set the bowl aside. Cook the spinach according to the package directions. Place the thawed spinach in a tea towel and squeeze it until as much of the moisture as possible has been removed. Set the spinach aside.

  • In a small, heavy-bottom saucepan, heat the olive oil over medium heat until it ripples slightly. Add the minced onion and carrots, and cook, stirring frequently, until the onion is translucent and lightly browned (about 5 minutes). Remove the mixture from the heat and set it aside to cool briefly.

  • In a large bowl, place the mayonnaise, sour cream and Worcestershire sauce, “soup mix” and black pepper, and whisk to combine well. Add the Parmigiano-Reggiano, celery, spinach, onion and carrot mixture, and mix to combine. Place the garlic and salt on a flat surface, like a cutting board, and press into a paste with the flat side of a large knife (like a chef’s knife). Add the garlic paste to the dip, and mix to combine. Cover the bowl and place in the refrigerator to chill for at least an hour, and up to 3 days. Serve in a bread bowl with chips or celery for dipping.


Comments are closed.

  • Kat
    September 26, 2014 at 4:09 PM

    Thanks for another great recipe! So happy to have your bread book so I can make a bread bowl to put this dip in-yippee! Can’t wait to try this recipe.

  • Rochelle Sherman DelBene
    September 26, 2014 at 1:42 PM

    Oh Nicole I luv you! I miss spinach dip-I use to make it for get togethers as well as just to have to snack on, but stopped since I couldn’t eat it-to much torture to look at it :( I can’t wait to make this!!

  • Donia Robinson
    September 26, 2014 at 12:08 PM

    Where are the canned water chestnuts?? ;)

    • September 26, 2014 at 12:36 PM

      Not in here, Donia! I know that is a common ingredient in spinach dips and as much as I actually really like water chestnuts, I just don’t care for them in spinach dip. I much prefer celery!

      • Donia Robinson
        September 26, 2014 at 1:00 PM

        I don’t really care for them myself, but I do love cutting those little circle into matchsticks, and the matchsticks into squares, So peaceful. We made this all the time when I was growing up. Lots of good memories. It’s like a Throwback Thursday and a DIY Friday all in one! ;)

  • Jennifer S.
    September 26, 2014 at 11:00 AM

    Wow. I guess I always thought it was GF. shoot. or maybe I was buying another one that was GF – I’m stumped but glad to know I have options here. I mean seriously – there is just no reason to go anywhere else – your blog and cookbooks have IT ALL!

    • September 26, 2014 at 11:20 AM

      It used to be GF, I think, Jennifer. And then they went and added some form of barley. P.S. You’re the best!

  • Lucy
    September 26, 2014 at 10:16 AM

    Yay! Onion dip, the families favorite! Love ya!

  • Mare Masterson
    September 26, 2014 at 9:31 AM

    Nicole I love you! We are wanting onion dip like you would make with soup mix. I do not see any onions listed in the ingredients in your “soup mix” part of the recipe–just onion powder. Recipes I have seen for the soup mix have called for a product I cannot find here in stores.

    • September 26, 2014 at 11:20 AM

      Hi, Mare, as I discuss in the post, the commercial soup mix has dehydrated onions, but I replace those in the dry mix with just more onion powder, and in the spinach dip with sautéed onions.

      • Mare Masterson
        September 26, 2014 at 12:22 PM

        Thanks. I guess I misunderstood this sentence to mean that the onions are part of the onion soup mix: “Now, for our homemade onion “soup mix,” in place of the dehydrated onions, I just minced and sautéed a small yellow onion.”

      • Judy Moore
        October 5, 2014 at 9:55 PM

        Looking forward to making this.

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