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I’m excited to share my easy green bean casserole with frozen green beans! It’s the perfect dish for your holiday table! This classic Thanksgiving favorite has been reinvented from the original Campbell’s recipe to be quicker and more convenient without compromising on flavor. Instead of traditional fried onions on top, I’ve swapped in crispy panko breadcrumbs and freshly grated Parmesan cheese for a delicious Italian twist that I absolutely love!

Green Bean Casserole With Frozen Green Beans.

Since frozen green beans are pre-blanched, you can skip that step and dive straight into the deliciousness. Simply toss them in frozen and watch as they transform into a creamy and savory dish that everyone will love. This green bean casserole is perfect for busy holiday gatherings and saves you so much time while delivering on flavor! For more delicious casserole recipes, try our Jiffy corn casserole and sweet potato apple casserole!

🔎 Quick Look: Green Bean Casserole with Frozen Green Beans

  • ⏱️ Prep Time: 15 minutes
  • ⏱️ Cook Time: 45 minutes
  • 🕒 Total Time: 1 hour
  • 🍽 Calories: ~91 kcal per serving
  • 👥 Servings: 9
  • 💙 WW: 2 points per serving
  • 🥣 Key Ingredients: Frozen green beans (haricots verts), cremini mushrooms, onion, cream of mushroom soup, milk, panko breadcrumbs, Parmesan cheese
  • 👩‍🍳 Cook Method: Sautéed mushrooms and onions, then the casserole is baked
  • ⭐ Difficulty: Easy

Why You Will Love This Recipe

  • Easy: Using frozen green beans is convenient and easy! There’s no washing, trimming, or blanching! It’s perfect for busy days and can be quickly prepared with minimal effort!
  • Great Texture: Frozen haricot verts are extra fine and tender, which gives this casserole the perfect texture.
  • Flavorful: The green beans pair nicely with the creamy, flavorful mushroom sauce.
  • Perfect for Holiday Gatherings: It’s the ultimate green bean casserole for Thanksgiving and holiday gatherings! For more recipe ideas, don’t miss our roundup of 30+ healthy Thanksgiving sides!

Key Ingredients

Ingredients for green bean casserole in bowls.
  • Frozen Green Beans: This green bean casserole is made with frozen green beans! We love using frozen haricots verts, extra-fine French green beans, for their tender texture and delicate taste. If you love green beans, be sure to try our crispy air fryer green beans next!
  • Onion: Dice a white or sweet onion.
  • Mushrooms: Slice cremini mushrooms and then sauté them.
  • Italian Seasoning: Add incredible flavor to this casserole with Italian seasoning. The blend of herbs like oregano, basil, and thyme adds flavor.
  • Garlic Powder: Garlic powder enhances the flavor profile of this dish.
  • Cream of Mushroom Soup: Use one, 10.5 ounce can of condensed cream of mushroom soup.
  • Milk: Use 1% milk or your milk of choice.
  • Soy Sauce: Use low-sodium soy sauce or tamari for a gluten-free alternative.
  • Panko Breadcrumbs: For the crispy green bean casserole topping, use Panko breadcrumbs.
  • Parmesan: Freshly grated Parmesan cheese is part of the casserole topping.
  • Onion Powder: A touch of onion powder adds flavor to the topping and complements the other seasonings.
  • Cooking Spray: Lightly spray the casserole with cooking spray or olive oil after adding the topping to help it become crispy and golden brown as it bakes.

Find the full list of ingredients and measurements in the recipe card below.

Green Bean Variations

I love using frozen haricots verts in this casserole because they are extra fine and tender, adding a delightful texture and fresh flavor to the dish. However, you can use other types of frozen green beans in place of haricots verts. Standard frozen cut or whole frozen green beans work well in this casserole, so feel free to use what you have on hand!

If you prefer to use fresh green beans, simply trim the ends and cut them into bite-sized pieces. Blanch them in boiling water for about 3-4 minutes until they are bright green and slightly tender, then immediately transfer them to an ice bath to stop the cooking. Drain well before adding them to the casserole mixture.

Or, you can use canned green beans for this recipe. Just make sure to drain and rinse them thoroughly to remove excess sodium before adding them to the casserole. Since canned green beans are already cooked, you can skip the baking time to just warm everything through for about 15-20 minutes.

How to Make Green Bean Casserole with Frozen Green Beans

Onions mushrooms and seasonings in pan.
  1. Cut the ends off the cremini mushrooms. Then, evenly slice them. Also, dice the onion.
Cooked onions and mushrooms in a skillet.
  1. Add the olive oil to a skillet over medium heat on the stove. Then, add the sliced diced onion to the skillet and sauté. After that, add the sliced mushrooms, Italian seasoning, garlic powder, salt, and pepper to the skillet. From there, sauté until the mushrooms are softened and cooked. After that, remove the skillet from the heat.
Mixed green beans in soup mixture in a bowl.
  1. In a large bowl, combine the cream of mushroom soup, milk, soy sauce, and sautéed ingredients. Next, add the frozen green beans and thoroughly mix until everything is well combined.
Green beans mixture in casserole dish.
  1. Lightly spray a casserole dish with olive oil. After that, pour the green bean mixture into the dish.
Green beans in dish covered with foil.
  1. Cover the casserole dish with foil and bake it at 350°F for 30-35 minutes.
Crispy breadcrumb topping in a bowl.
  1. In a separate bowl, mix the panko breadcrumbs, Parmesan cheese, Italian seasoning, garlic powder, onion powder, salt, and pepper.
Breadcrumb topping on green bean casserole.
  1. Once done baking, remove the foil from the baking dish. Next, evenly sprinkle the breadcrumb mixture over the casserole. Then, lightly spray the top with olive oil to help it crisp up.
  1. Bake the casserole for an additional 15-20 minutes, or until the topping is golden brown. Once done, let the casserole slightly cool before serving.

Expert Tips

  • Grated Parmesan Cheese: If you don’t want to freshly grate the Parmesan, you can use store-bought pre-grated Parmesan instead. Or, substitute it with grated Romano cheese for a similar flavor.
  • Breadcrumbs to Use: If you don’t have panko, regular breadcrumbs will work. Just note they may be a bit less crispy. For added crunch, toast them lightly in a skillet. Also, if you’re using seasoned breadcrumbs, reduce or skip the added Italian seasoning, garlic powder, onion powder, salt, and pepper in the topping mixture to avoid over-seasoning. Or, you can replace the breadcrumbs with crispy French-fried onions for a traditional topping. 
  • Slice the Mushrooms: Slice the mushrooms as evenly as possible to ensure they cook at the same rate, resulting in a uniform texture throughout the casserole. 
  • Double the Recipe: You can easily double this green bean casserole recipe if serving a larger crowd.

Serving Suggestions

This green bean casserole pairs well with many dishes! It’s a versatile side dish and makes a wonderful addition to a Thanksgiving spread or holiday meal. Here are some ways to serve this casserole.

Storage Instructions

To Store: Store leftovers in an airtight container in the refrigerator for 3-4 days.

To Reheat: You can reheat this green bean casserole in the oven at 350°F for about 20-30 minutes, or until warm. Cover the dish with foil before reheating to prevent the casserole from drying out. For a crispy topping, remove the foil during the last 10 minutes of baking.

Frozen Green Bean Casserole FAQs

Can You Use Frozen Green Beans For Green Bean Casserole?

Yes, you can use frozen green beans for green bean casserole! Frozen green beans are already blanched, so there’s no need to thaw, wash, trim, or boil them first. Simply add them straight from the freezer to the creamy mushroom sauce, and they’ll cook perfectly tender as the casserole bakes in the oven.

Can You Freeze Green Bean Casserole?

Yes, you can freeze this green bean casserole after baking it. Make sure it’s completely cooled before transferring it to a freezer-safe airtight container. Then, store it in the freezer for up to 2-3 months. When ready to serve, bake it from frozen or thaw it overnight and reheat it in the oven.

Do I Have to Thaw the Frozen Green Beans?

No, don’t thaw the frozen green beans before using them in your green bean casserole. Simply take the frozen beans straight from the freezer and mix them with the cream of mushroom soup mixture. The beans will cook as the casserole bakes in the oven, and the moisture from the frozen beans will help create a creamy texture in the dish.

Can I Make Green Bean Casserole Gluten-Free?

Yes, you can easily make this green bean casserole gluten-free! Simply swap the soy sauce for tamari. Also, use your favorite gluten-free breadcrumbs in place of the panko.

More Recipes to Try Next!

If you try this recipe please be sure to leave us a comment and star rating, ★★★★★, letting us know how it turns out for you.

5 from 1 vote

Easy Green Bean Casserole with Frozen Green Beans

Prep: 15 minutes
Cook: 45 minutes
Total: 1 hour
Servings: 9 servings
This green bean casserole with frozen green beans saves you time while delivering incredible flavor. There’s no washing, trimming, or blanching required!
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Ingredients 

For the Casserole:

  • 1 pound frozen haricots verts (extra fine green beans)
  • 2 teaspoons olive oil
  • 1/2 cup diced white or sweet onion
  • 8 ounces cremini mushrooms, sliced
  • 1/4 teaspoon Italian seasoning
  • 1/2 teaspoon garlic powder
  • 1/4 teaspoon salt
  • 1/4 teaspoon pepper
  • 10.5 ounce can of condensed cream of mushroom soup
  • 1/2 cup 1% milk or milk of choice
  • 1 teaspoon low-sodium soy sauce or tamari

For the Topping:

  • 1/2 cup panko breadcrumbs
  • 1/2 ounce freshly grated Parmesan cheese
  • 1 teaspoon Italian seasoning
  • 1/2 teaspoon garlic powder
  • 1/4 teaspoon onion powder
  • 1/4 teaspoon salt
  • 1/4 teaspoon pepper
  • olive oil spray, to lightly spray the topping

Instructions 

  • Cut the ends off the cremini mushrooms. Then, evenly slice them. Also, dice the onion.
  • Add the olive oil to a skillet over medium heat on the stove. Then, add the sliced diced onion to the skillet. Sauté the onions for about 3-4 minutes, until translucent. Then, add the sliced mushrooms, Italian seasoning, garlic powder, salt, and pepper to the skillet. Sauté for an additional 4-5 minutes, until the mushrooms are softened and cooked. After that, remove the skillet from the heat.
  • In a large bowl, combine the cream of mushroom soup, milk, soy sauce, and sautéed ingredients. Then, add the frozen green beans and thoroughly mix until everything is well combined.
  • Lightly spray a casserole dish with olive oil. After that, pour the green bean mixture into the dish, spreading it evenly.
  • Cover the casserole dish with foil and bake it at 350°F for 30-35 minutes.
  • Make The Topping: In a separate bowl, mix the panko breadcrumbs, Parmesan cheese, Italian seasoning, garlic powder, onion powder, salt, and pepper.
  • Once done baking, remove the foil from the baking dish. Next, evenly sprinkle the breadcrumb mixture over the casserole. Then, lightly spray the top with olive oil to help it crisp up.
  • Bake the casserole for an additional 15-20 minutes, or until the topping is golden brown. Once done, let the casserole slightly cool before serving.

Video

Notes

  • Storage: Store leftovers in an airtight container in the refrigerator for 3-4 days.
  • Breadcrumbs to Use: If you don’t have panko, regular breadcrumbs will work. Just note they may be a bit less crispy. For added crunch, toast them lightly in a skillet.
 
WW Points: 2 points per serving
To see your WW Points in the WW app for this recipe click here! Or, please manually add the ingredients to the recipe builder.

Nutrition

Calories: 91kcal, Carbohydrates: 10.9g, Protein: 3.1g, Fat: 3.7g, Saturated Fat: 0.9g, Cholesterol: 2mg, Sodium: 408mg, Fiber: 1.3g, Sugar: 2.6g

Nutrition information is automatically calculated, so should only be used as an approximation.

Tried this recipe?Mention @wwhealthyfoodiegirl or tag #healthyfoodiegirl!
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About Us

Welcome to Healthy Foodie Girl! We’re Shawna and Ella, a mother-daughter team. We create healthy, flavorful recipes featuring high-protein meals, Weight Watchers-friendly recipes, and lighter versions of your favorite dishes.

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5 from 1 vote

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Recipe Rating




1 Comment

  1. Shawna Clark says:

    5 stars
    This Green Bean Casserole, made with frozen green beans, is a holiday winner, easy, reliable, and always delicious! It’s perfect for Thanksgiving because it saves prep time, turns out great every time, and still delivers that classic cozy flavor everyone loves.