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These Oven Roasted Mushrooms are super easy to make and only requires 5 minutes of hands on preparation! Featuring roasted mushrooms oven baked with a simple wine and garlic infused butter sauce. This restaurant-quality roasted mushroom side dish is incredibly rich in flavor, extremely versatile and totally customizable! It’s perfect for both easy weeknight dinners and holiday entertaining!

Overhead photo of Oven Roasted Mushrooms and Onions garnished with fresh herbs and lemon wedges in a white serving bowl with a pale tan napkin and ramekin of fresh oregano next to the bowl.

Update: This post was originally published in December 2014. I made updates to the post below to include more information about baked mushrooms. Plus, there’s now step by step photos to show you JUST how quick and easy this mushroom and onion side dish is to make!

About this oven roasted mushrooms recipe

These buttery, oven caramelized mushrooms and onions are meaty, buttery and guaranteed to give any steakhouse a run for their money!

These golden brown, tender mushrooms and onions are roasted to juicy perfection and drizzled with an intensely flavorful garlic and wine infused butter sauce. Finished with a liberal sprinkling of fresh herbs and a generous squeeze of lemon, this mushroom side dish is far from boring and bland!

Plus, this savory oven baked mushrooms recipe is so incredibly quick and easy to make! With just one sheet pan, a few kitchen staples and 5 minutes of hands on preparation, you can make restaurant-quality garlic butter mushrooms in your own kitchen!

Extremely flavorful, completely customizable and a total cinch to make, these steakhouse-style mushrooms are perfect for any occasion! Whether you serve them as a quick weeknight side dish, spoon them over mashed potatoes as an easy vegetarian main, or add them to your holiday table, they are sure to be a hit – even with your picky eaters!

If you love mushrooms be sure to check out these fan-favorite recipes next: Marsala Mushroom Sauce, Easy Mushroom Spaghetti Sauce, Mushroom Orzo Risotto Recipe, and Marinated Mushroom Recipe.

What are oven mushrooms?

Oven mushrooms, also known as roasted or baked mushrooms, are a meaty, intensely flavorful dish prepared by drizzling fresh mushrooms with a garlic and herb infused butter and then baking them in the oven until fragrant and tender.

You can serve the oven roasted mushroom classically as an appetizer or side dish; however, they’re also delicious as a topping for toast, steaks and potatoes. Plus, warm mushrooms are a fantastic addition to salads and pizza!

Overhead photo of fresh cremini and button mushrooms, thyme sprigs and oregano sprigs in a white bowl - photo of the main ingredients in the roasted mushroom recipe.

All about fresh mushrooms for roasting

How to pick the best mushrooms at the store?

Shopping for mushrooms at the grocery store is easy once you know exactly what to look for! Follow these simple tips for purchasing the best mushrooms:

  • Look for mushrooms that are firm with a smooth appearance and no brown spots. Avoid pressing on the mushrooms too hard when checking for firmness or you will bruise them.
  • The mushrooms surface should be dry and not damp, nor should they be shriveled and dried out.
  • Fresh mushrooms should appear plump and fresh.
  • Check the underside of the mushroom cap. If you are looking for a delicate flavor, choose mushrooms with a closed veil and hidden gills under the mushroom cap. For a richer flavor, select mushrooms with an open veil and exposed gills under the cap.

How to store fresh mushrooms?

Once you have selected the perfect mushrooms at the store, it is important they are properly stored.

Fresh mushrooms should be stored unwashed in their original packaging in the refrigerator.

If you purchased loose fresh mushrooms at the store, transfer them to a brown paper bag or storage container with the lid propped open for ventilation before storing them in the refrigerator.

Fresh mushrooms can be stored in the refrigerator for 2-3 days.

Pro-tip #1:  Fresh mushrooms need to breathe, so do not place mushrooms in an air-tight container!

Pro-tip #2:  Do not clean mushrooms until you are ready to use them!

How to prepare mushrooms for oven roasting?

Once you are ready to cook mushrooms, avoid rinsing them under running water! Soaking fresh mushrooms with water can cause them to turn rubbery and slimy once cooked. To properly clean mushrooms, use a damp paper towel to gently brush off any dirt or debris.

Also, make sure you trim the bottom of the mushroom stems. (For shiitake mushrooms, remove the stems completely as they are tough in texture.)

Overhead photo of fresh mushrooms and pearl onions topped with sprigs of fresh herbs on a rimmed baking sheet, before baking.

How to make roasted mushrooms in oven?

Garlic butter oven roasted mushrooms are incredibly easy to make! With just a handful of ingredients and a large, rimmed baking dish, you can prepare restaurant-quality mushrooms at home!

  1. Preheat oven to 425 degrees F.
  2. Season mushrooms:  Place mushrooms and onions on a large, rimmed baking dish. Toss with oil and season with a pinch of salt and pepper. Arrange the vegetables in a single layer, with the mushrooms facing stem side down. Add 4 sprigs of fresh thyme and 2 sprigs of rosemary to the baking dish.
  3. Partially roast:  Place mushrooms and onions in the oven. Roast for 15 minutes or until lightly browned.
  4. While the mushrooms are roasting, make the butter sauce:  In a large, microwave-safe liquid measuring cup, combine butter, wine, garlic, thyme and oregano. Season with ¼ teaspoon salt and 1/8 teaspoon pepper. Microwave at 1 for 1 minute. Stir and microwave again for 1 ½ in 30 second increments. (SEE NOTES)
  5. Toss with butter and finish roasting:  Remove mushrooms and onions from the oven. Drizzle the butter sauce over the vegetables and gently toss or stir to coat. Continue roasting for 5-10 minutes or until mushrooms are browned and tender. Taste and adjust for seasoning with salt and pepper.
  6. Serve:  Transfer mushrooms and onions to a serving dish. Drizzle with butter sauce from the baking dish. Garnish with fresh herbs and lemon if using. Enjoy!

Step-by-step photos: oven roasting mushrooms at home

Overhead photo collage of how to make Oven Roasted Mushrooms step by step with the step direction written out on each photo.

FAQs: frequently asked questions

What to add to this oven mushroom recipe?

You can add a wide variety of spices, vegetables and other ingredients to roasted mushrooms to create a dish that is perfect for you and your family! You can either use what you have on hand, or play around with your favorite herbs, seasonings and vegetables to customize this oven roasted mushrooms recipe to your specific taste and needs!

How to customize butter roasted mushrooms

  • Fresh Herbs – basil, bay leaf, chives, cilantro, dill, tarragon, oregano (pictured), parsley, scallions and thyme (pictured).
  • Seasonings – cayenne, coriander, cumin or garlic
  • Vegetables – asparagus, bell peppers, fennel, leeks, potatoes, pearl onions (pictured), shallots or sun-dried tomatoes.
  • Cheese – grated parmesan, pecorino or shredded white cheddar cheese.
  • Other flavors – bacon, bread crumbs, capers, lemon (pictured), marsala wine, sherry, soy sauce, wine or worcestershire.

Are roasting mushrooms in oven healthy?

Oven roasted mushrooms are good for you!

Mushrooms are full of nutrients and a wonderful addition to a healthy diet.

Nutritional benefit of mushrooms:

  • High in antioxidants.
  • Rich in vitamin B
  • Good source of fiber and minerals (potassium and phosphor).
  • Low in calories, carbohydrate and sodium.

How many calories in this oven mushroom recipe?

The exact number of calories in oven baked mushrooms will depend on the recipe and exact measurement of ingredients used. There are approximately 169 calories per serving in this easy garlic roasted mushrooms recipe (based upon 6 servings).

Overhead photo of roasted mushrooms and pearl onions topped with fresh herbs on a rimmed baking sheet, immediately after baking.

Serving suggestions

Roasted mushrooms are extremely versatile and can be served as an appetizer, side dish or light vegetarian main. I personally love these silky, zesty mushrooms with Italian dinners, like crispy parmesan chicken cutlets, italian sausage pastas, lemon chicken pastas, and bolognese recipes.

See this post for a comprehensive list on how to serve mushrooms and what to serve with mushrooms!

Angled photo of Oven Roasted Mushrooms and Onions garnished with fresh herbs and lemon wedges in a white serving bowl.

Storing leftovers

How long do roasted mushrooms last?

Once mushrooms are oven baked, allow them to cool completely to room temperature. Then, transfer them to an airtight container or resealable bag. Store in the refrigerator for up to 3-5 days.

Can you freeze oven roasted mushrooms?

This roasted mushrooms recipe freeze beautifully!

To freeze, allow cooked mushrooms to cool completely. Next, transfer mushrooms to a wax paper lined baking sheet in a single layer. Place the baking sheet in the freezer and flash freeze for 1-3 hours or until completely frozen. Transfer frozen mushrooms to a freezer-safe airtight container and store in the freezer for up to nine months.

To use frozen cooked mushrooms, remove them from the freezer, but do not thaw. Add frozen mushrooms directly to a dish or recipe that will be heated or cooked, such as soups, stews, casseroles or sauces. Alternatively, oven baked mushrooms can be reheated – see below for instructions.

Can I reheat mushrooms after baking?

Despite what a lot of critics say, you can safely reheat mushrooms – as long as they were properly stored!

If you placed your mushrooms in the freezer, you must thaw them overnight in the refrigerator before reheating.

To reheat oven cooked mushrooms, first melt a pat of butter in a skillet over medium-high heat. Then, add the mushrooms and sauté, stirring frequently. Cook the ‘shrooms until they are just warm throughout, about 3 minutes.

Overhead photo of Oven Roasted Mushrooms and Onions garnished with fresh herbs and lemon wedges in a white serving bowl with a serving spoon inserted under the mushrooms.

Until next week, friends, cheers – to making marvelous steakhouse-style mushrooms at home!

Cheyanne

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More easy roasted veggie side dishes!

Overhead landscape photo of Oven Roasted Mushrooms and Onions garnished with fresh herbs and lemon wedges in a white serving bowl with a pale tan napkin and ramekin of fresh oregano next to the bowl.

Oven Roasted Mushroom recipe

5 from 5 votes
Total Time: 25 minutes
Prep Time: 5 minutes
Cook Time: 20 minutes
Servings: 6 servings
This Oven Roasted Mushroom recipe is super easy to make and only requires 5 minutes of hands on preparation!  Baked with a simple wine and garlic infused butter sauce, this steakhouse-style mushroom side dish is incredibly flavorful and extremely versatile!

Equipment

  • Large Rimmed Baking Dish
  • Large Liquid Measuring Cup

Ingredients 

  • 1 pound Mushrooms (Cremini or White Button) – cleaned and stems trimmed to be flush with the caps
  • 8 ounces Frozen Pearl Onions – defrosted (SEE NOTES)
  • 2 TBS Olive Oil
  • Sea Salt & Ground Black Pepper
  • 5 TBS Unsalted Butter – cubed
  • 1/3 Cup Good Dry White Wine
  • 2-3 cloves Garlic – minced
  • 2 tsp EACH: Fresh Thyme & Fresh Oregano – chopped, plus more sprigs for roasting

Garnish: Fresh Parsley/Thyme, Lemon Wedges

Instructions

  • Preheat oven to 425 degrees F.
  • Season mushrooms: Place mushrooms and onions on a large, rimmed baking dish. Toss with oil and season with a pinch of salt and pepper. Arrange the vegetables in a single layer, with the mushrooms facing stem side down. Add 4 sprigs of fresh thyme and 2 sprigs of rosemary to the baking dish.
  • Partially roast: Place mushrooms and onions in the oven. Roast for 15 minutes or until lightly browned.
  • While the mushrooms are roasting, make the butter sauce: (SEE NOTES) In a large, microwave-safe liquid measuring cup, combine butter, wine, garlic, thyme and oregano. Season with ¼ teaspoon salt and 1/8 teaspoon pepper. Microwave at 1 for 1 minute. Stir and microwave again for 1 ½ in 30 second increments.
  • Toss with butter and finish roasting: Remove mushrooms and onions from the oven. Drizzle the butter sauce over the vegetables and gently toss or stir to coat. Continue roasting for 5-10 minutes or until mushrooms are browned and tender. Taste and adjust for seasoning with salt and pepper.
  • Serve: Transfer mushrooms and onions to a serving dish. Drizzle with butter sauce from the baking dish. Garnish with fresh herbs and lemon if using. Enjoy!

Notes

  1. When selecting mushrooms, make sure you pick ones that are roughly the same size for even cooking!
  2. If you can’t find pearl onions or simple don’t like them, feel free to substitute 8 ounces of thickly sliced shallots instead! Alternatively, you can omit the onions completely and use an extra 8 ounces of mushrooms!
  3. When making the butter sauce in the microwave, be very careful! The wine and butter mixture will bubble up when it is heating, so make sure you are using a large measuring cup and microwave in short increments! I recommend at least a 2 cup liquid measuring cup.  Alternatively, you can melt the butter with wine, garlic and seasonings on the stove-top!
Nutritional information is an approximation and based upon 6 servings.

Nutrition

Calories: 169kcal    Carbohydrates: 7g    Protein: 3g    Fat: 14g    Saturated Fat: 7g    Cholesterol: 25mg    Sodium: 8mg    Potassium: 305mg    Fiber: 1g    Sugar: 3g    Vitamin A: 292IU    Vitamin C: 5mg    Calcium: 16mg    Iron: 1mg

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