Skip to Content

Green Bean Casserole without Cream of Mushroom Soup

This green bean casserole without cream of mushroom soup is an easy side and dairy free side Thanksgiving or holiday side dish. Best of all, it tastes better than the canned stuff!

Dairy free green bean casserole on a white marble counter

Green bean casserole was created in 1955 by the Campbell Soup Company and was originally called “Green Bean Bake.”  

The idea was “to create a quick and easy recipe around two things most Americans always had on hand in the 1950s: green beans and Campbell’s Cream of Mushroom Soup.”

I love green bean casserole but personally I like my green bean casserole made with fresh ingredients rather than from a can.

That is why I make my green bean casserole without cream of mushroom soup and using whole frozen green beans.

Do I have to use oat milk or can I use regular milk?

Since many people who don’t want cream of mushroom soup are dairy free, I’ve made this recipe with oat milk because I find a good oat milk to be indistinguishable from real milk.

However, if you prefer to use real milk, just switch it out for the oat milk.

Can I use heavy cream?

If you have heavy cream, then yes, you can use it instead of the oat milk and the starch.

Can I use other dairy free milks?

Yes, but I find a mild flavored full fat oat milk like Oatly and Alpro provide to be the best alternative.

However, if you would rather use almond milk, an unsweetened barista almond milk will work well too. Alternatively, almond cooking milk would work well here also.

I’ve never used soy milk but I believe it would work just fine as well.

You can use coconut milk, but unless you have a mild flavored one because I find it adds a slight coconut flavor to the green bean casserole.

Yield: 6 servings

Green Bean Casserole without Cream of Mushroom Soup

Dairy free green bean casserole on a white marble counter

This green bean casserole without cream of mushroom soup is perfect for Thanksgiving and the holidays.

Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes


  • 1 pound green beans, rinsed, trimmed, and cut in half* (or you can use whole frozen green beans)
  • 2 Tbsp oil
  • 1 small onion, minced
  • 2 cloves garlic, minced
  • 1 cup button or cremini mushrooms, finely chopped, 60 grams
  • 3/4 cup vegetable or chicken broth
  • 1 cup mild flavor full fat oat milk
  • 2 tablespoons cornstarch
  • 1 1/2 cups crispy fried onions *
  • Salt


  1. Bring a large pot of water to a boil. Add green beans and cook for 5 minutes. Drain and place in an ice water bath to stop cooking. Drain and set aside. (Skip if using frozen green beans.)
  2. Heat oil in a large oven-safe skillet over medium heat.  Add onion, garlic, and mushrooms. Cook on medium-low heat until onions become transparent.
  3. Add in stock/broth, whisking to incorporate.
  4. Preheat oven to 400°F or 205°C.
  5. Place corn starch in a bowl. Slowly whisk in the oat milk to prevent clumps.
  6. Reduce heat to low. Whisk in oat milk mixture. Cook until it thick into a sauce. 
  7. Add salt to taste. Remove from heat.
  8. Place green beans in a casserole dish, pour sauce over them, and add 1//2 cup fried onions.  Toss to coat well, and top with remaining fried onions.
  9. Bake for 15 minutes or until lightly browned on top. Serve immediately.


*While this is a classic recipe, I often make three changes for myself.  First, I use frozen whole green beans to save time, Second, I don’t like mixing in the fried onions so I only put them on top because I don’t like the mushy texture they give when mixed in.  Last, I often skip the baking part with good since everything is already cooked and hot. Instead I use this as a heating process if I make the casserole hours earlier.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 164Total Fat: 7gSaturated Fat: 1gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 1mgSodium: 321mgCarbohydrates: 24gFiber: 4gSugar: 8gProtein: 4g

Did you make this recipe?

Please leave a comment on the blog or share a photo on Pinterest

Skip to Recipe