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Green Bean Mushroom Casserole

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We’ve all been there—craving that comforting, home-cooked meal but not wanting to end up with leftovers for days. That’s where my Green Bean Mushroom Casserole comes in. It’s the perfect size for one or two people, making it ideal for a cozy dinner or even a small gathering.

A plate of green bean mushroom casserole with fried onions.
Green Bean Mushroom Casserole. Photo credit: Tiny Batch Cooking.

I love this recipe because it’s packed with flavor, easy to make, and doesn’t leave you with a fridge full of extra servings. Plus, the classic green bean casserole brings together the best combination of fresh green beans and mushrooms with a crispy fried onions topping that’s hard to resist.

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The first time I made this casserole, I was amazed at how something so simple could taste so good. The crispy onion and creamy mushroom sauce make this recipe a comforting dish. It reminded me of family dinners growing up, but without the overwhelming amount of leftovers to manage afterward. 

Mushroom and Green Beans in Can for Vegan Green Bean Casserole

For those who prefer a vegan option, canned mushrooms are a fantastic substitute for the traditional cream of mushroom soup. They offer a rich, earthy flavor that pairs perfectly with the green beans, and they’re super convenient. Just be sure to choose a good brand to keep the quality of the dish. You can mix the canned mushrooms with a homemade or store-bought cream sauce to get that creamy texture we all love in a casserole.

Using canned green beans in your Green Bean Mushroom Casserole is totally fine. They can be a great time-saver and still provide good flavor. Just make sure to drain and rinse them well to reduce the sodium and any tinny taste. If you prefer a bit of texture and freshness, you might want to use fresh or frozen green beans, but canned can definitely do the trick in a pinch. 

A plate of green bean casserole topped with crispy fried onions and fresh herbs, with a second dish of the casserole blurred in the background.
A plate of green mushroom bean casserole.

Green Bean and Mushroom Casserole a Popular Recipe among all Thanksgiving Recipes

Green Bean Mushroom Casserole has earned its place on many Thanksgiving tables for a good reason—it’s a crowd-pleaser. But just because it’s a holiday favorite doesn’t mean you can’t enjoy it year-round. Making it in a small batch is perfect for those times when you want a taste of Thanksgiving without the hassle of a big feast. This recipe brings all the warmth of the holidays into a manageable size that’s just right for one or two people.

Make Green Bean Casserole ahead of Time when Making a Casserole for Thanksgiving

One of the best things about this casserole is that you can make it ahead of time. If you’re planning a small Thanksgiving meal or just want to get a head start on dinner, prepare the casserole up to the point before baking, then store it in the fridge. When you’re ready to eat, just pop it in the oven, and you’ll have a hot, comforting dish without the last-minute rush. This make-ahead option is a lifesaver, especially when you’re cooking multiple dishes.

Plate of green bean casserole topped with fried onions and herbs, with a bowl of casserole and fresh green beans in the background.
Plate of green bean casserole with fried onions.

Easy Instructions for Creating the Best Green Bean Casserole Recipe

Must-Have Tools for Your Kitchen

  • Cooking Pot: For blanching the green beans. A medium-sized pot is good.
  • Strainer: To drain the beans after blanching.
  • Casserole Dish or Baking Dish: There’s no need for a large skillet, a small one is perfect for making just enough for one or two servings.
  • Mixing Bowl: To combine all the ingredients before baking.

Key Ingredients:

  • Green Beans: The best to use is fresh. Depending on the availability, you can also use frozen or canned.
  • Cream of Mushroom Soup: The base that brings everything together in creamy goodness.
  • Fried Onions: The crispy topping that adds a satisfying crunch and a burst of flavor.

*Exact measurements are listed in the recipe card below.

Detailed Directions for Making the Best Green Bean Mushroom Casserole

Creating this Green Bean Mushroom Casserole is as easy as it gets. Regardless if you’re just starting out with cooking, you’ll find this recipe straightforward and rewarding. With a few simple steps and common ingredients, you’ll have a delicious casserole that’s sure to become a staple in your small-batch cooking.

Let’s break it down into simple steps:

One: Prepare All Ingredients

Start by gathering all your ingredients. If you’re using fresh green beans, trim the ends. If they’re frozen, just measure out the amount you need. Have the cream of mushroom soup and fried onions ready on the side. Preheat oven to 350°Fahrenheit (175°Celsius).

Ingredients for green bean mushroom casserole are displayed, including a bowl of green beans, a dish of fried onions, and a bowl of cream of mushroom soup with mushroom slices on top.
Ingredients for Green Bean Mushroom Casserole.

Two: Blanch Beans

Bring a pot of water to a boil over medium heat, then blanch the green beans for a few minutes until they’re just tender. Drain them using a strainer and set aside.

Two side-by-side images showing green beans in a strainer on the left and a bowl with green beans and a bowl of mushroom sauce on the right. Only hands are visible in the images.
Preparing green bean mushroom casserole.

Three: Add Mushroom and Fried Onions

In a mixing bowl, combine the blanched green beans, and cream of mushroom soup. Mix well until everything is evenly coated. Transfer the mixture to the casserole dish, even out the surface, and cover it with lots of fried onions.

Four-step illustrated recipe showing a green bean casserole: combining green beans with sauce (steps 1 & 2), transferring to a baking dish (step 3), and topping with crispy onions before baking (step 4).
Adding green bean mushroom into a casserole.

Four: Bake

Bake in the preheated oven at 400°Fahrenheit (200°Celsius) for about 10 minutes, or until the top is golden and crispy. Allow the casserole to cool slightly before serving. Enjoy it as a comforting main dish or as a side dish.

A person holding a casserole dish containing green beans, mushrooms, and crispy onion toppings over a wooden surface. Nearby are small potatoes, green beans, and cooking utensils.
Preparing green bean mushroom casserole for baking.

Pro Tips for Best Results

  • Use Fresh Green Beans: If possible, use fresh green beans for the best texture. Frozen beans work well too but might require a bit more draining.
  • Season to Taste: Add a pinch of salt and pepper to the mixture before baking, or even a dash of garlic powder for extra flavor.
  • Crispier Topping: For an even crispier topping, add the fried onions halfway through the baking time rather than at the start.

Common Questions Answered

What Are the Perfect Pairings for Green Bean Mushroom Casserole?

This casserole pairs wonderfully with roasted chicken, turkey, or even a simple grilled tofu for a vegetarian option. Add a side of mashed potatoes or a fresh salad, and you’ve got a complete meal.

These pairings not only helps the flavors of your Green Bean Mushroom Casserole but also help create a well-rounded and satisfying meal. Enjoy experimenting with these combinations to find your perfect match.

A plate of green bean mushroom casserole topped with crispy fried onions and garnished with herbs is shown.
A plate of green bean mushroom casserole with crispy onions.

What Are the Proper Storage Tips for Green Bean Mushroom Casserole?

Transfer the cooled casserole to an airtight container. This will keep moisture and air out, helping to maintain the casserole’s texture and flavor. If you plan to eat the casserole within a few days, store it in the refrigerator. It will stay fresh for up to 3-4 days. Reheat it in the oven or microwave before serving.

How Do I Freeze Green Bean Mushroom Casserole?

You can freeze the casserole before or after baking. To freeze, let it cool completely, then wrap it tightly in foil or plastic wrap and place it in a freezer-safe container. When ready to eat, thaw overnight in the fridge and bake as directed.

Additional Easy Small-Portion Recipes You’ll Love

If you enjoyed making this Green Bean Mushroom Casserole, be sure to check out other small-batch recipes like Crispy Fried Onions to learn how to make the perfect topping for this dish. Try making our Iced Karkade Tea for the refreshment.

Pin This Recipe for Later

A plate of green bean mushroom casserole topped with crispy onions is shown. Text above the dish reads, "Quick and Easy Green Bean Mushroom Casserole," from tinybatchcooking.com.
A plate of green bean mushroom casserole.

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A plate of green bean casserole topped with crispy onions and fresh parsley, with a creamy white sauce underneath.

Green Bean Mushroom Casserole

Zuzana Paar
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We’ve all been there—craving that comforting, home-cooked meal but not wanting to end up with leftovers for days. That's where my Green Bean Mushroom Casserole comes in. It's the perfect size for one or two people, making it ideal for a cozy dinner or even a small gathering.
Prep Time 10 minutes
Cook Time 10 minutes
Course Main Dishes, Side Dish
Cuisine American, International
Servings 3 Portions
Calories 186 kcal

Equipment

Ingredients
 
 

  • 2 Cups Green Beans
  • 1 Cup Cream of Mushroom Soup
  • 1 Cup Fried Onions

Instructions
 

  • Start by gathering all your ingredients. If you’re using fresh green beans, trim the ends. If they’re frozen, just measure out the amount you need. Have the cream of mushroom soup and fried onions ready on the side. Preheat oven to 350°Fahrenheit (175°Celsius).
  • Bring a pot of water to a boil over medium heat, then blanch the green beans for a few minutes until they’re just tender. Drain them using a strainer and set aside.
  • In a mixing bowl, combine the blanched green beans, and cream of mushroom soup. Mix well until everything is evenly coated. Transfer the mixture to the casserole dish, even out the surface, and cover it with lots of fried onions.
  • Bake in the preheated oven at 400°Fahrenheit (200°Celsius) for about 10 minutes, or until the top is golden and crispy. Allow the casserole to cool slightly before serving. Enjoy it as a comforting main dish or as a side dish.

Notes

  • Use Fresh Green Beans: If possible, use fresh green beans for the best texture. Frozen beans work well too but might require a bit more draining.
  • Season to Taste: Add a pinch of salt and pepper to the mixture before baking, or even a dash of garlic powder for extra flavor.
  • Crispier Topping: For an even crispier topping, add the fried onions halfway through the baking time rather than at the start.

Nutrition

Serving: 1PortionCalories: 186kcalCarbohydrates: 20gProtein: 3gFat: 11gSaturated Fat: 4gPolyunsaturated Fat: 1gMonounsaturated Fat: 0.3gCholesterol: 3mgSodium: 438mgPotassium: 683mgFiber: 3gSugar: 4gVitamin A: 506IUVitamin C: 9mgCalcium: 95mgIron: 1mg

Disclaimer

Please note that nutrient values are estimates only. Variations can occur due to product availability and manner of food preparation. Nutrition may vary based on methods of origin, preparation, freshness of ingredients, and other factors.

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By Zuzana Paar on October 4th, 2024
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About Zuzana Paar

I'm Zuzana, the creator of Tiny Batch Cooking. With my skills as a content creator, recipe developer, food writer, videographer, blogger, and photographer, I focus on small batch recipes that are easy and delicious. My aim is to help you enjoy cooking.

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