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Cream of Onion Soup Substitute

Tired of using salty condensed soups in your casseroles? Then use our homemade cream of onion soup instead and add as little or as much salt as you want!

Imagine digging into a plate of fiesta chicken casserole only to be overwhelmed with the flavor of salt.

But, you can avoid that problem by making your own cream of onion substitute!

Best of all, once you learn to make a cream of soup base, you can use that to create any sort of soup you need. Like cream of bacon soup!

If you need a baking mix recipe, then try our homemade bisquick mix.

The cream of onion soup in a decorative purple bowl.

How to make cream of onion soup?

Start by combining the flour and milk in a small mixing bowl.

Use your whisk for this step because it will help break up the flour.

The onions in a medium saucepan sauteed in melted butter.

Next, grab a medium saucepan and place it over low to medium heat. Place the butter into the pan and let it melt.

After that, add the onions to the pan and let them cook until they’re soft and partially caramelized. Use your wooden spoon to stir them occasionally.

Also, take a look at the photo above as reference for your cream of onion soup.

Broth and spices have been added to the sauteed onions.

Now, once the onions have cooked, pour in either vegetable or chicken broth. If you use vegetable broth then the soup is vegetarian.

Go ahead and stir in the garlic powder, smoked paprika, and any salt and pepper you want to add flavor to the soup.

Then, let the ingredients continue to cook until the broth starts to simmer. When that happens, stir in the flour and milk mixture from earlier.

Flour and milk have been added to thicken the broth.

Last, keep stirring for about three to five minutes or until your cream of onion soup has thickened.

Turn off the heat because you are done! That’s it, Kim and I hope you enjoy this recipe and wish you all the best 🙂

The soup substitute is done and ready to be used.

Cream of Onion Soup Substitute Recipe Tips:

  • If you wish to eat this recipe as a regular soup, then consider adding a cup of extra broth to thin it out a little.
  • While the recipe can be made in a pressure cooker, it’s easier to do it on the stove-top.
  • Feel free to add extras to the recipe like cooked bacon, sautéed mushrooms, or anything else you desire.

Don’t forget to check out our Cream of Onion Soup web story!

Yield: 1 Serving

Cream of Onion Soup Substitute

The soup substitute is done and ready to be used.

Tired of using salty condensed soups in your casseroles? Then use our homemade cream of onion soup instead and add as little or as much salt as you want!

Prep Time 5 minutes
Cook Time 15 minutes
Total Time 20 minutes


  • 1/2 Cup Milk, (we used whole)
  • 1/4 Cup All-Purpose Flour
  • 1/2 Cup White Onion, (diced or thinly sliced)
  • 1 Tablespoon Unsalted Butter
  • 3/4 Cup Vegetable Broth, (or chicken broth)
  • 1/8 Teaspoon Garlic Powder
  • 1/8 Teaspoon Smoked Paprika, (or a dash)
  • Salt and Pepper to Taste


  1. In a small bowl or measuring cup, whisk together the milk and flour until smooth. Set aside.
  2. Heat a medium saucepan over low-medium heat. Melt the butter in the pan, then add the onions. Stir the onions every couple of minutes until they begin to caramelize and brown slightly. After the onions caramelize a bit, add the broth, garlic powder, paprika, salt, and pepper. Stir to combine, and allow the broth to come to a simmer.
  3. When the broth begins to simmer, pour in the milk and flour mixture and stir constantly until the soup thickens, about 3 to 5 minutes.
  4. Use the soup in place of canned cream of onion soup in casseroles or other dishes. Store in the refrigerator for up to 4 days until ready to use.


The calories listed are an approximation based on the total recipe. Since it is intended to be used as a full substitute for canned soup, individual serving sizes were not calculated. Actual calories will vary. The soup can be stored in your fridge, in a sealed container, for up to four (4) days.

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Nutrition Information:



Serving Size:

10.5 Ounces

Amount Per Serving: Calories: 331Total Fat: 16gSaturated Fat: 10gUnsaturated Fat: 0gCholesterol: 42mgSodium: 862mgCarbohydrates: 40gFiber: 2gSugar: 11gProtein: 8g

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Tracee Pettee

Monday 11th of October 2021

So thankful, and excited I stumbled across your Cream of Chicken, Cream of Celery, and Cream of Onion Soup Substitutes! Who likes spending all that extra money at the store when you need soup for a casserole! As seniors on a budget, these are a great find and I usually have all the ingredients on hand! I sent hubby to the store and he came back without my cream of onion soup! Rather than give him a lecture or go without making my casserole, I did a google search and you popped up! Yippeee Thanks so much for sharing!


Monday 11th of October 2021

Hi Tracee!

We're so glad these worked out for you! They work great in casseroles and are so easy to whip up. Thanks so much for the comment, and we hope you have a wonderful week! :)


Sunday 11th of October 2020

I am curious if you make a large enough batch of this soup if it can be canned and save to have later so that you don't have to make a new batch each time


Monday 12th of October 2020

Good Morning Maxine, that's a good question. Unfortunately, we know nothing about canning vegetables, soups, or anything like that. So, I'm unable to answer the question. Kim and I chatted, and we feel like freezing the soup might an option. Also, you might want to try a Google search (if you haven't already), there might be some information available about canning cream of onion soup. I hope these suggestions help. Thank you for coming by to ask the question. Have a lovely day :)

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