Try this delicious and easy-to-make fresh green bean and mushroom side dish featuring sautéed mushrooms, tender green beans, and a flavorful panko-Parmesan topping. It's easy to make ahead, too.
Green beans and mushrooms topped with crispy panko crumbs in a white oblong casserole with handles.

This green bean and mushroom recipe features tender, fresh green beans, mushrooms sautéed in butter, and a topping of crisp panko crumbs and Parmesan cheese. It’s a winning side dish that’s as satisfying as it is easy to make.

Notes From the MGC Kitchen

Green beans and mushrooms are a great combination, but putting them together in a dish doesn’t always need to involve soup concentrate and canned fried onions. This recipe is a light, flavorful, fresh take on the classic green bean casserole that offers the rich umami quality that makes the combination so craveable. It’s a cinch to make in advance, too.

A labeled overhead photo of ingredients for green beans and mushrooms with crumb topping including fresh green beans, mushrooms, chicken broth, panko, lemon, butter, Parmesan cheese, garlic, and onion.

Key Ingredients

This is an overview of the key ingredients for this recipe. Please see the printable recipe card below for the complete listing, including quantities.

  • FRESH GREEN BEANS: Fresh green beans are a must for this dish. When shopping, look for beans with a bright green color that snap easily when bent and have no sign of wrinkling or wilting on the ends. Store them, unwashed, in your refrigerator’s crisper for up to 5 days.
  • ONION AND GARLIC: These aromatics, sautéed in olive oil, flavor the green beans as they simmer in broth.
  • CHICKEN BROTH: Simmering the fresh green beans in chicken broth adds a lot of flavor to the finished dish. We always recommend using the low-sodium variety as it leaves you in better control of seasoning.
  • BUTTON MUSHROOMS: You can use either white button mushrooms or cremini in this dish.
  • PANKO AND PARMESAN: Combined with melted butter, panko crumbs and grated Parmesan cheese make a crispy topping for the green beans that adds both flavor and texture.
A close up of green beans and mushrooms with crumb topping, showing tender beans and toasty crumbs.

How To Make Green Beans and Mushrooms With Crispy Crumb Topping

This is an overview of how this recipe is prepared. Please see the printable recipe card below for detailed step-by-step instructions.

BEFORE YOU BEGIN: Preheat the oven to 350°F.

PRE-COOK THE GREEN BEANS: In a large skillet with a tight-fitting lid, heat the olive oil over medium heat. Add the onion and cook until softened, 2 minutes. Add the garlic and cook for an additional minute, just until fragrant. Do not brown. Add the beans, season with salt and pepper and toss to coat with the oil. Reduce the heat to medium-low, add the broth and cover. Simmer until the liquid has evaporated and the beans are tender, 15 to 20 minutes. Taste and adjust the seasoning as needed.

SAUTÉ THE MUSHROOMS: While the beans simmer, heat 2 tablespoons of the butter over medium heat in a separate pan. Add the mushrooms, season with salt and pepper, and sauté until the liquid they give off has evaporated and they are nicely browned, 8 to 10 minutes. Remove from the heat and set aside.

COMBINE THE BEANS AND MUSHROOMS: Spray an oblong casserole dish (1-1/2 to 2 quart) with nonstick spray. Once the beans are tender, combine them with the mushrooms and layer them in the prepared pan.

Fresh green beans and mushrooms in a casserole dish ready to be topped with crumbs and baked.

MAKE THE CRUMB TOPPING: Melt the remaining butter over low heat and remove from the stove. Add the panko crumbs and Parmesan cheese. Toss to combine with the melted butter, then scatter the mixture over the top of the beans and mushrooms.

BAKE AND SERVE: Bake until the crumbs are toasted, about 6 to 8 minutes (watch carefully). If desired, squeeze a little fresh lemon juice over the top just before serving.

Make-Ahead Instructions

This dish can be made up to 2 days in advance. Assemble the casserole, allow it to cool completely (this minimizes moisture build-up), and cover tightly with foil.

To reheat, remove it from the refrigerator about 30 minutes in advance to remove the chill, then bake covered for 20 minutes at 350°F. Uncover and bake for another 5 to 10 minutes to crisp and brown the topping.

A baking dish of green beans and mushrooms with crumb topping on a gray surface with fresh, whole mushrooms and raw green beans on the side.

More Ways To Cook Fresh Green Beans

This casserole recipe is just one way to make the most of this versatile vegetable. Here are a few more great recipes:

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A baking dish of green beans and mushrooms with crumb topping on a gray surface with fresh, whole mushrooms and raw green beans on the side.
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Green Beans and Mushrooms With Crispy Crumb Topping

Try this delicious and easy-to-make fresh green bean and mushroom side dish featuring sautéed mushrooms, tender green beans, and a flavorful panko-Parmesan topping. It's easy to make ahead, too.
Prep: 25 minutes
Cook: 45 minutes
Total: 1 hour
Servings: 6 to 8 servings

Ingredients

  • 2 lbs fresh green beans, ends trimmed
  • 2 tablespoons olive oil
  • 5 tablespoons unsalted butter, divided
  • 1 medium onion, thinly sliced
  • 2 cloves garlic, minced
  • 1 cup low-sodium chicken broth
  • Salt and freshly ground black pepper
  • 12 ounces fresh mushrooms, cleaned and sliced
  • 2/3 cup panko breadcrumbs
  • 1/4 cup grated Parmesan cheese
  • Fresh lemon juice
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Instructions 

  • Preheat the oven to 350°F.
  • In a large skillet with a tight fitting lid, heat the olive oil over medium heat. Add the onion and cook until softened, 2 minutes. Add the garlic and cook for an additional minute, just until fragrant. Do not brown.
  • Add the beans, season with salt and pepper and toss to coat with the oil. Reduce the heat to medium-low, add the broth and cover. Simmer until the liquid has evaporated and the beans are tender, 15 to 20 minutes. Taste and adjust the seasoning as needed.
  • While the beans simmer, heat 2 tablespoons of the butter over medium heat in a separate pan. Add the mushrooms, season with salt and pepper, and sauté until the liquid they give off has evaporated and they are nicely browned, 8 to 10 minutes. Remove from the heat and set aside.
  • Spray an oblong casserole dish (1-1/2 to 2 quart) with nonstick spray. Once the beans are tender, combine them with the mushrooms and layer them in the prepared pan.
  • Melt the remaining butter over low heat and remove from the stove. Add the panko crumbs and Parmesan cheese. Toss to combine with the melted butter, then scatter the mixture over the top of the beans and mushrooms.
  • Bake just until the crumbs are toasted, about 6 to 8 minutes (watch carefully). If desired, squeeze a little fresh lemon juice over the top just before serving.

Notes

MAKE AHEAD INSTRUCTIONS

This dish can be made up to 2 days in advance. Assemble the casserole, allow it to cool completely (this minimizes moisture build-up), and cover tightly with foil.
To reheat, remove it from the refrigerator about 30 minutes in advance to remove the chill, then bake covered for 20 minutes at 350°F. Uncover and bake for another 5 to 10 minutes to crisp and brown the topping.

Nutrition

Calories: 243kcal, Carbohydrates: 20g, Protein: 8g, Fat: 15g, Saturated Fat: 8g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 6g, Cholesterol: 29mg, Sodium: 341mg, Fiber: 5g, Sugar: 7g, Calcium: 117mg, Iron: 2mg

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

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Lynne Webb and Erika Pitera, creators of MyGourmetConnection in the kitchen, working on a soup recipe for the website.

About Us

We’re Lynne and Erika, a mother-daughter duo passionate about creating recipes that bring flavor and variety to your kitchen in a simple, approachable way.

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2 Comments

  1. Hello,

    I work for Twin Pines Landscaping, and we are putting together a bunch of our favorite Thanksgiving recipes featuring fruits and veggies to share on our social media accounts! If this is your personal recipe that you have the rights to, we’d love to share your picture and link to the recipe here on your website! Let us know what you think!

    Thanks, and Happy Almost Thanksgiving!
    Ashley DiFranza and The Twin Pines Landscaping Team