Roasted Mushrooms Recipe
I make mushrooms with dinner all the time, no matter what other sides or meats I serve. And no matter what, it’s always the favorite side dish! So, if you have a little extra room in the oven, pop a baking sheet of these mushrooms in it.

What makes these roasted mushrooms the best? The simple seasoning on mushrooms is really the way to go. You don’t want to overload mushrooms with many other flavors because the mushroom flavor will be lost. Mushrooms taste great on their own so I enhance them with a little simple seasoning and let them shine, just like I make my sauteed mushrooms as well.
To roast mushrooms, I only use olive oil. Mushrooms are basically sponges, so when I tried to toss them in butter before roasting, they soaked up everything and I ended up adding even more butter. To avoid butter overload, toss roasted mushrooms in a little bit of melted salted butter that’s flavored with garlic.

Ingredient Notes and Type of Mushrooms
Mushrooms – of course, this is the main ingredients! Baby bella mushrooms, aka cremini, is the most common type you will find at the store and great to use because they are meaty and sturdy. Some other mushrooms you can add in or substitute include: white button mushrooms, portobello (chopped), shiitake, maitake, or oyster mushrooms. Just note that smaller ones will have shorter bake time.
Seasoning – this is a simple base recipe so we are sticking to the simple seasoning of salt, pepper, and garlic powder. You can always add a little spiciness with red pepper flakes or even a pinch of cayenne pepper.
Garlic – butter and garlic is a great way to finish the mushrooms and since we add it at the end, I highly recommend fresh garlic that you simply peel and press. Fresh garlic will provide the best aroma and flavor (jarred can be overpowering even have a metallic taste.)
How to Clean Mushrooms Before Coking
It’s always been a notion that you should never wash mushrooms! While that’s true to a certain extend, you just want to make sure you don’t expose them to water for too long. I found the perfect way to clean mushrooms that is fast and easy. You just have to follow three simple rules:
- Place them in the colander and wash them under cold water.
- Wash them FAST.
- And dry them right away with a clean towel or a paper towel.

How To Make Roasted Mushrooms
There are only a few simple steps: wash, season, roast, and flavor:
Now that we have clean mushrooms, cut them in half and the ones that are very large, you can cut into quarters. Toss them with olive oil and seasoning and make sure that they are evenly coated so there are no clumps of seasoning anywhere.
Spread the mushrooms in one even layer so that they cook evenly all around and choose the largest rimmed baking sheet you have. If you have an older baking sheet, I recommend rubbing it with some oil as well. For the better roast, don’t line the roasting sheet and turn the mushrooms cut side down.
Roast in preheated the oven for 20-25 minutes. If you notice there is liquid accumulating while baking, you can take the baking sheet out and drain it off. Make sure to check inside the oven by turning on the light not opening the door. Try to open the oven doors as little as possible because every time you do, the oven temperature lowers.
As a final flavor finish, toss the roasted mushrooms in melted butter mixed with aromatic pressed garlic.

Variations To Try
Make them cheesy – Sprinkle on some freshly grated parmesan after baking.
Add some herbs – Fresh parsley or thyme goes well with mushrooms.
Make them even more garlicky– Mix in some freshly minced garlic with mushrooms before baking.
Add a little spice – Crushed red pepper flakes add the perfect amount of heat.

To Store Uncooked Mushrooms
Store them unwashed in the original packaging. Original packaging will most likely have holes poked though so that mushrooms can breathe. Don’t try to seal mushrooms air-tight.
Loose fresh mushrooms can be stores in a brown paper bag or ventilated vegetable container, in the refrigerator. Don’t wash clean until ready to cook.
Fresh mushrooms can be stored in the refrigerator for about 2 days. After that, mushrooms will start to soften and go bad.
How To Store Roasted Mushrooms?
Store cooked mushrooms in an air-tight food storage container with a lid. Store cooked mushrooms in the refrigerator for up to 3 days.

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Roasted Mushrooms Recipe
Ingredients
- 24 oz crimini mushrooms aka baby bella mushrooms
- 1/4 cup olive oil
- 1 tsp fresh cracked black pepper to taste
- 1 1/2 tsp garlic powder
- salt to taste
- 2 tbsp salted butter melted
- 1 garlic clove pressed
Instructions
- Preheat oven to 425°F and lightly grease a large rimmed baking sheet. Baking sheet should be able to fit all the mushrooms in one even layer.
- Cut bottoms of the stems off mushrooms and wipe mushrooms clean with a damp paper towel. If some mushrooms are too large, cut them in half.
- Place mushrooms in a mixing bowl, add olive oil and quickly toss all the mushrooms.
- Add salt, pepper, and garlic powder and toss mushrooms to evenly coat them in seasoning.
- Spread mushrooms in one even layer on the prepared baking sheet. Turn each mushroom stem side down.
- Bake for 20-25 minutes, straining off the liquid half way through. (Make sure to take the baking sheet out of the oven to strain and close the oven so oven temperature doesn’t drop.)
- Melt butter and mix it with pressed garlic while mushrooms are baking.
- Once mushrooms are done, toss them in a clean mixing bowl with melted butter and garlic mixture.
- Serve right away.
Video
Notes
- Make them cheesy – Sprinkle on some freshly grated parmesan after baking.
- Add some herbs – Fresh parsley or thyme goes well with mushrooms.
- Make them even more garlicky– Mix in some freshly minced garlic with mushrooms before baking.
- Add a little spice – Crushed red pepper flakes add the perfect amount of heat.
Nutrition
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Originally published on Will Cook For Smiles in April 2019.
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Christmas Dinner Recipes, Gluten Free Recipes, Most Popular Recipes, Side Dishes, Thanksgiving Dinner Recipes,All images and text ©Lyubov Brooke for ©Will Cook For Smiles. Please do not use my images without prior permission. If using my posts in collections and features, please link back to this post for the recipe.
Disclaimer: Nutrition information shown is not guaranteed to be 100% accurate as most ingredients and brands have variations.
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