Roasted Green Beans with Mushrooms, Balsamic, and Parmesan

Roasted Green Beans with Mushrooms, Balsamic, and Parmesan are so delicious and this is perfect for a holiday side dish! And roasting brings out amazing flavor in the green beans and mushrooms!

PIN the Roasted Green Beans with Mushrooms to try them later!

When I made Roasted Green Beans with Mushrooms, Balsamic, and Parmesan years ago, I didn’t guess that they’d end up being such an enormous hit on the blog. But this recipe has been viewed and pinned literally millions of times. 

And I do think roasting vegetables is the greatest trick to add to your cooking repertoire! Nothing concentrates and sweetens the flavor of vegetables more than roasting, and these beans are still one of the all-time most popular Holiday Recipes on Kalyn’s Kitchen. And Thanksgiving is coming up soon, so I’m recommending this recipe as my Friday Favorites post for this week.

I also love to make this recipe for dinner guests, even when it’s not during the holidays. I use the lovely thin French beans and brown Cremini mushrooms from Costco. And this combination of green beans and mushrooms has been a hit with everyone I’ve made it for. I hope you’ll try it next time you’re looking for a side dish that’s really something special!

What ingredients do you need?

(This is only a list of ingredients; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.)

• mushrooms (I like brown Cremini mushrooms)
• fresh green beans (I like thin French-style green beans)
• Olive Oil (affiliate link)
• Balsamic Vinegar (affiliate link)
• salt and black pepper
• parmesan cheese

Want roasted green beans but don’t like Mushrooms?

If mushrooms are not a go in your family, instead of roasted green beans with mushrooms I recommend Garlic Roasted Green Beans with Shallots and Almonds or Roasted Green Beans and Red Peppers. Those green bean recipes are delicious as well!

How low in carbs are the Roasted Green Beans with Mushrooms?

These amazing roasted green beans have only 5.2 net carbs per serving with 2.7 grams of protein.

How to make Roasted Green Beans with Mushrooms, Balsamic, and Parmesan:

(This is only a summary of the steps for the recipe; please scroll down for complete printable recipe. Or if you use the JUMP TO RECIPE link at the top of the page, it will take you directly to the complete recipe.)

1. Cut mushrooms into slices that are about 1/2 inch thick. It’s fairly important that mushrooms are the same thickness.
2. Trim both ends of the beans and cut in half.
3. I put the beans and mushrooms into a Ziploc bag, whisked together the olive oil and balsamic vinegar, poured it into the bag, and squeezed the veggies around until they were all coated with the oil-balsamic mixture.
4. Spray a baking sheet lightly with non-stick spray and spread out beans and mushrooms.
5. Bake in a preheated 450f/230C oven for 20-30 minutes, starting to check then after 20 minutes.
6. When the veggies are done to your liking, put on a platter, season with salt and fresh-ground black pepper to taste, sprinkle with finely grated Parmesan, and devour! 
7. Serve Roasted Green Beans with Mushrooms hot and enjoy!

Make it a Low-Carb Meal:

This flavorful roasted vegetable dish is great for the holidays. But if you want to serve it for a regular low-carb meal it would be great with one of these low-carb main dishes:

• Chicken Cutlets with Mustard Sauce
• Grain-Free Breaded Pork Chops
• Sauteed Scallops with Garlic
• Chicken Piccata (with Fried Capers)
• Air Fryer Salmon with Mustard-Herb Sauce

More Low-Carb and Gluten-Free Holiday Side Dishes:

• Keto Vegetable Recipes for Thanksgiving
• Thanksgiving Side Dish Recipes (Low-Carb and Gluten-Free)
• Broccoli Recipes for Thanksgiving
• Keto Side Dishes, Appetizers, and Salads for the Holidays
• Keto Brussels Sprouts Recipes

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4.3 Stars (78 Reviews)

Yield: 6 servings

Roasted Green Beans with Mushrooms

Prep Time 20 minutes

Cook Time 30 minutes

Total Time 50 minutes

These Roasted Green Beans with Mushrooms are one of the most popular Thanksgiving side dishes on the blog! And everyone who likes green beans and mushrooms is going to love this method for cooking them together that's kicked up with balsamic vinegar and Parmesan.

Ingredients

Toggle ingredient group

• 8 oz. mushrooms
• 1 lb. fresh green beans, preferably thin French style beans
• 1 1/2 T olive oil
• 1 T balsamic vinegar
• salt and fresh ground black pepper to taste
• 2 T finely grated parmesan cheese

Instructions

1. Preheat oven to 450F/230C. Lightly spray a large baking sheet with non-stick spray.
2. Wash mushrooms and let drain (or spin dry in salad spinner, which is what I did.)
3. While mushrooms are drying, trim ends of beans and cut beans in half so you have bite-sized pieces. (An easy way to trim them is to gather a small handful of beans, stand them up on cutting board, holding loosely so they will fall down and have ends ends aligned, then trim. Repeat with other end.)
4. When they're dry, cut mushrooms into slices 1/2 inch thick.
5. Put cut beans and mushrooms into a Ziploc bag or plastic bowl.
6. Whisk together olive oil and balsamic vinegar and pour over, then squeeze bag or stir so all the beans and mushrooms are lightly coated with the mixture.
7. Arrange on large cookie sheet, spreading them out well so beans and mushrooms are not crowded.
8. Roast 20-30 minutes, starting to check for doneness after 20 minutes.
9. Cook until beans are tender-crisp, mushrooms are cooked, and all liquid on the pan from mushrooms has evaporated.
10. Season beans to taste with salt and fresh ground pepper, then sprinkle with finely grated Parmesan.
11. Serve the Roasted Green Beans with Mushrooms hot and enjoy!

Notes

I used brown Cremini mushrooms, but any mushrooms will work for this recipe.

This recipe was created by Kalyn many years ago!

Nutrition Information

Yield

6

Serving Size

1
Amount Per Serving Calories 74Total Fat 4.2gSaturated Fat 1gTrans Fat 0gUnsaturated Fat 3.1gCholesterol 1mgSodium 113mgCarbohydrates 8.2gFiber 3gSugar 3.8gProtein 2.7g

Nutrition information is automatically calculated by the Recipe Plug-In I am using. I am not a nutritionist and cannot guarantee 100% accuracy, since many variables affect those calculations.

Did you make this recipe?

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Low-Carb Diet / Low-Glycemic Diet / South Beach Diet Suggestions:
Roasted Green Beans kicked up with mushrooms, balsamic, and Parmesan are a perfect low-carb side dish for any holiday meal. They would also be approved for all phases of the original South Beach Diet.

Find More Recipes Like This One:
Use Side Dishes to find more recipes like this one. Use the Diet Type Index to find recipes suitable for a specific eating plan. You might also like to follow Kalyn’s Kitchen on Pinterest, on Facebook, on Instagram, on TikTok, or on YouTube to see all the good recipes I’m sharing there.

Historical Notes for this Recipe:
This recipe for green beans roasted with mushrooms was first posted in 2009 and became an immediate hit on the blog. It was updated with better photos in 2018 and last updated with more information in 2026.