A delicious cream sauce made from yellow onions, water, olive oil, and a few spices; allergy-friendly, easy to make, and healthy to eat!

In a sense, this is a repeat recipe.
I originally posted it with my Creamy Scalloped Potatoes, but I really really feel like it deserves its own devoted piece of the blog.
I've been using this delicious puree in many a-casserole, including chicken and wild rice and tuna casserole.
Whenever I make that particular recipe, everyone goes back for seconds and even thirds! It's a big hit here.

It's also been awhile since I made a video!
I started mulling it over on Wednesday, and resolved to get one done the next day.
Natalie was a great little helper and makes a couple of unexpected appearances in the video. I hope you enjoy the tutorial!
Recipe notes
Nutrition facts include the entire recipe, assuming you use it as a whole like I do.
Use this puree as an allergy-friendly replacement for cream sauces or canned soups.
Dairy-Free Cream Sauce
Watch the Video
Ingredients
- 1 cup water
- 2 sweet onions sliced thin
- 2 garlic cloves minced
- 1 dried bay leaf
- ¼ teaspoon red pepper flakes use black pepper for a milder sauce
- ½ teaspoon dried thyme
- ½ teaspoon sea salt
- 2 Tablespoons olive oil
Instructions
- Heat the water in a pan.
- Add in the onions, garlic, bay leaves, red pepper flakes, thyme, and salt.
- Bring the heat up to a simmer.
- Cover tightly, reduce the heat to medium low, and cook for 20 minutes, stirring a few times during this process.
- Blend the onion mixture with the olive oil until smooth and well combined.
- Add in another splash of water if you desire a thinner consistency.
- Taste and season more, if necessary.
Notes
Nutrition
If you have a chance to try this recipe, please leave a star rating and a comment below letting me know how you liked it!


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kinsey
Can't wait to try!
Happy New Year Lauren!
Lauren
Thanks Kinsey, happy new year girl!
Sharon
I love this idea! I can imagine many yummy uses. I can't have dairy for 2 weeks and I'm dy-ING.
Your kids are adorable. 🙂 Personality!
Lauren
Lol, I too would be lost without my cheese, so I feel for ya! Good to hear from you girl!
monika
nutritional yeast will be your best friend. despite its name - it does not feed candida! and it's cheeeeeeeeesy 🙂
Catherine
This is even better if you roast the onions in the oven (I put them whole with the peel). When they are very soft, you peel them and continue the recipe. Onions taste sweeter when roasted.
Lauren
What a neat idea, thanks for sharing Catherine!
Tracy
This sauce makes my casseroles really pop! Delicious!
Chris
My Daughter recently diagnosed coeliac. Gluten free Christmas here we come. I tried this for 1st time yesterday Christmas Day ,hoping it’d be good ,I was NOT disappointed. Loved it! and so did the whole family. I made it with chilli flakes as I wasn’t sure what pepper flakes were in uk. I also added a small piece of gluten-free chicken stockpot. Delicious. Xx
Lauren
Yay! So happy you liked this, I use it all the time in various dishes as a substitute for cream sauce!
Shikha
Would this work well as a pasta sauce? Toddler with multiple food sensitivities .
Lauren
Maybe, it depends if the child likes onions I suppose, as that flavor does come through.