Balsamic marinated mushrooms are roasted until browned and tender, then tossed in balsamic vinegar and olive oil so they soak up every drop.
Roasting concentrates the flavor and removes extra moisture, so the mushrooms turn meaty instead of soggy. A short rest in the marinade makes them tangy and savory, and they are a great make ahead side, appetizer, or topping.
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Why This Balsamic Marinated Mushrooms Recipe Works
Roasting at high heat evaporates the water in the mushrooms, which gives them a deep, meaty flavor and a pleasant chew.
Tossing the hot mushrooms with vinegar and oil lets them absorb the marinade quickly, because warm mushrooms drink in liquid.
The recipe uses simple ingredients and little hands on work, and the flavor improves as the mushrooms rest.
Ingredients for Balsamic Marinated Mushrooms
- 1 1/2 lb small white button mushrooms, whole or halved if large
- 3 tbsp extra virgin olive oil, for roasting
- 3 tbsp extra virgin olive oil, for tossing after roasting
- 1 tsp kosher salt
- 1/2 tsp black pepper
- 5 sprigs fresh thyme, or 1/2 tsp dried thyme
- 2 cloves garlic, finely minced
- 2 cloves garlic, smashed with the skins on
- 4 tbsp balsamic vinegar
Button mushrooms: Small whole mushrooms hold their shape ideal. Cut larger ones in half so they cook evenly.
Olive oil: Use half to roast the mushrooms and half to finish them for a silky coating.
Thyme: Fresh sprigs give a woodsy aroma. Dried thyme works if you use a much smaller amount.
Garlic: Minced garlic flavors the mushrooms, while the smashed cloves perfume the pan juices.
Balsamic vinegar: A good aged balsamic is sweet and mellow. Avoid very thin, sharp vinegars.
How to Make Balsamic Marinated Mushrooms
1. Heat the oven Heat the oven to 375 degrees F.
2. Coat the mushrooms Put the mushrooms in a roasting pan in a single layer and toss with the first 3 tablespoons of olive oil.
3. Season Add the salt, pepper, thyme, minced garlic, and smashed garlic, then toss again.
4. Roast Roast for 35 minutes, stirring well at 20 minutes, until browned and tender.
5. Marinate while hot Transfer the hot mushrooms and all their juices to a bowl. Add the balsamic vinegar and the remaining 3 tablespoons of olive oil and toss well.
6. Rest Let the mushrooms cool and marinate uncovered for at least 2 hours.
7. Chill for more flavor For the ideal flavor, cover and refrigerate overnight, then bring to room temperature before serving.
How to Serve Balsamic Marinated Mushrooms
Serve the mushrooms at room temperature or slightly warm, with a spoonful of the marinade. They are excellent piled on juicy cheeseburgers or served beside Dutch oven pot roast. Add air fryer asparagus for another vegetable side, or toss a few into an Italian house salad for extra flavor.
How to Store and Reheat Balsamic Marinated Mushrooms
Cool the mushrooms and refrigerate them in their marinade in an airtight container for up to 4 days. Do not leave them at room temperature for more than 2 hours, because garlic in oil should stay cold. Freezing is not recommended since the texture turns soft. Bring to room temperature before serving.
Tips and Variations for Balsamic Marinated Mushrooms
Use one layer. Crowded mushrooms steam instead of browning, so use a large pan.
Stir once. Stirring at the halfway point helps them brown evenly.
Add the vinegar while hot. Hot mushrooms absorb the marinade better than cold ones.
Do not wash them. Wipe mushrooms with a damp towel instead of soaking, because they absorb water.
Add herbs. Rosemary or oregano can replace the thyme.
Add heat. A pinch of red pepper flakes in the marinade adds a gentle kick.
Use as a topping. Spoon over steak, toast, or pasta.
Store safely. Keep the mushrooms refrigerated and read the Texas AgriLife Extension food safety guide for safe handling.
Frequently Asked Questions About Balsamic Marinated Mushrooms
How long do balsamic marinated mushrooms need to marinate?
Two hours at room temperature is the minimum, and overnight in the refrigerator gives the ideal flavor.
Can I make balsamic marinated mushrooms ahead of time?
Yes. They improve after a day in the refrigerator. Serve them at room temperature for the ideal flavor.
Can I freeze balsamic marinated mushrooms?
Freezing is not recommended because the mushrooms turn soft and watery when thawed.
What kind of mushrooms work well?
Small white button mushrooms are classic, but cremini also work well and add a deeper flavor.
Can I use dried thyme?
Yes. Use about 1/2 teaspoon dried thyme in place of the fresh sprigs.
Balsamic Marinated Mushrooms with Thyme and Garlic
Equipment
- Large roasting pan
- Large bowl
- Spoon
Ingredients
Main Ingredients
- 1 ½ lb small white button mushrooms whole, or halved if large
- 3 tbsp extra virgin olive oil for roasting
- 3 tbsp extra virgin olive oil for tossing after roasting
- 1 tsp kosher salt
- ½ tsp black pepper
- 5 sprigs fresh thyme or 1/2 tsp dried thyme
- 2 cloves garlic finely minced
- 2 cloves garlic skin on, smashed
- 4 tbsp balsamic vinegar
Instructions
Cooking
- Preheat. Heat the oven to 375 degrees F.
- Oil. Spread the mushrooms in a single layer in a roasting pan and toss with 3 tbsp of the olive oil.
- Season. Add the salt, pepper, thyme, minced garlic, and smashed garlic and toss to coat.
- Roast. Roast 35 minutes, stirring at 20 minutes, until deeply browned.
- Dress. Move the hot mushrooms and juices to a bowl and toss with the vinegar and remaining 3 tbsp olive oil.
- Marinate. Cool and marinate uncovered at least 2 hours, or cover and refrigerate overnight. Serve at room temperature.
