Roasted Mushrooms with Garlic & Thyme Recipe
If you love cozy, flavorful bites that make any meal feel special, then you are going to adore this recipe for Roasted Mushrooms with Garlic & Thyme. These mushrooms come out juicy and tender with a golden, crispy breadcrumb topping infused with fresh garlic and fragrant thyme. Each mouthful bursts with earthy mushroom richness balanced by zesty lemon and buttery goodness. They’re incredibly easy to prepare, yet taste like a gourmet treat, perfect as a side dish or a delightful appetizer that everyone will ask you to make again and again.

Ingredients You’ll Need
Getting this recipe just right is all about simple, fresh ingredients that bring out the deep, natural flavors of the mushrooms. Each component plays a special role, from the olive oil that helps them crisp beautifully, to the fresh thyme that adds herbal brightness and color.
- 16 even-sized open cup mushrooms: Choose mushrooms with a firm texture and stalks cut level to hold the filling perfectly.
- 3 tbsp olive or vegetable oil: For lightly frying the mushrooms to achieve a lovely browned bottom.
- 2 cloves garlic, chopped very finely: Adds aromatic, savory depth without overpowering the dish.
- 3 tbsp unsalted butter, softened: Provides a rich, creamy base for the thyme and garlic mixture.
- 2 tbsp fresh thyme, chopped: Fresh thyme gives a fragrant herbal hint that complements the earthiness of mushrooms.
- ½ tsp garlic powder: Enhances the garlic flavor subtly in the breadcrumb topping.
- 5 tbsp fresh breadcrumbs: Adds the essential crunch and golden color as a delicious crust.
- 1½ tbsp lemon juice: Brings a bright zing that cuts through the richness perfectly.
- Salt and freshly ground black pepper to taste: Essential for seasoning and balancing all the flavors.
How to Make Roasted Mushrooms with Garlic & Thyme
Step 1: Lightly Fry the Mushrooms
Start by heating your olive or vegetable oil in a pan over medium-high heat. Once hot, place the mushrooms cap-side down and fry them for about 2 to 3 minutes. This quick sear helps to lock in moisture and gives the mushrooms a beautiful, lightly caramelized base that’s packed with flavor.
Step 2: Arrange in a Baking Dish
Transfer the mushrooms to a 9×13-inch baking dish, or any rectangular oven-proof dish you have on hand. Position each mushroom with the stalk facing upwards. This angle creates a perfect little cup ready to cradle the flavorful garlic and thyme butter and breadcrumb topping.
Step 3: Prepare Garlic Thyme Butter
In a small bowl, combine the softened unsalted butter with the finely chopped garlic, fresh thyme, lemon juice, salt, and pepper. Make sure your butter is nice and soft, so it blends easily and melts smoothly over the mushrooms when baked.
Step 4: Fill and Top the Mushrooms
Spoon a dollop of the garlic thyme butter onto each mushroom. Then gently press the fresh breadcrumbs prepared with garlic powder on top to create a crunchy, golden crust that’s irresistible once roasted.
Step 5: Bake to Perfection
You can choose to refrigerate your prepared mushrooms if you want to bake them later, making it a great make-ahead option. When ready, bake the mushrooms in a preheated oven at 400°F (200°C) for 15 minutes or until the breadcrumb topping is beautifully golden and crisp around the mushroom caps. The aroma alone will have you eager to dive in!
How to Serve Roasted Mushrooms with Garlic & Thyme

Garnishes
A sprinkle of freshly chopped parsley or an herb mix brightens the dish visually and adds a fresh flavor contrast. A light drizzle of good-quality extra virgin olive oil right before serving can also add a fragrant, silky finish.
Side Dishes
These roasted mushrooms are fantastic alongside roasted meats, grilled fish, or even as a hearty vegetarian main with a side of creamy polenta or buttery mashed potatoes. They also pair wonderfully with a crisp green salad to balance the richness.
Creative Ways to Present
For an elegant appetizer, serve the Roasted Mushrooms with Garlic & Thyme on a platter lined with fresh thyme sprigs. Alternatively, stuff them inside toasted baguette slices or atop crostini for a bite-sized treat that’s perfect for entertaining.
Make Ahead and Storage
Storing Leftovers
Leftover roasted mushrooms can be stored in an airtight container in the refrigerator for up to three days. Keep them chilled promptly to maintain freshness and prevent sogginess in the breadcrumb topping.
Freezing
While mushrooms don’t always freeze well fresh, roasted mushrooms do freeze surprisingly well. Place cooled mushrooms in a freezer-safe container or bag, separating layers with parchment paper. They’ll keep for up to two months and make a quick side when you’re pressed for time.
Reheating
To reheat, place your mushrooms on a baking tray and warm them in a 350°F oven for about 10 minutes or until heated through. This helps restore the crispness of the breadcrumb topping better than microwaving, which can make them mushy.
FAQs
Can I use dried thyme instead of fresh?
Yes, you can substitute dried thyme if fresh isn’t available. Use about one-third the amount since dried herbs are more concentrated. The flavor will be slightly different but still delicious.
What type of mushrooms work best for this recipe?
Open cup mushrooms or button mushrooms with caps that hold the butter and breadcrumbs well are ideal. Portobello caps can be used too but may require longer roasting.
Is it necessary to fry the mushrooms before baking?
Lightly frying the mushrooms before baking enhances their texture and flavor by giving them a caramelized, savory base, but you can skip this step if you’re short on time.
Can this dish be made vegan?
Absolutely! Substitute the butter with a vegan margarine or olive oil-based spread and use vegetable oil instead of butter in the topping. The flavor will still be wonderful.
How long can I refrigerate the mushrooms before baking?
You can prepare and refrigerate the mushrooms for up to 24 hours before roasting. Just cover the dish tightly to keep the flavors fresh and prevent drying out.
Final Thoughts
If you’re searching for a simple yet show-stopping side dish, I can’t recommend Roasted Mushrooms with Garlic & Thyme enough. The combination of juicy mushrooms, buttery garlic, fresh herbs, and a crispy breadcrumb topping is pure comfort on a plate. Give this recipe a try soon—you’ll find it’s one of those dishes that elevates any meal with very little effort. Trust me, once you make it, these roasted mushrooms will become a beloved staple in your kitchen!
PrintRoasted Mushrooms with Garlic & Thyme Recipe
A savory and aromatic side dish featuring roasted mushrooms infused with garlic, fresh thyme, and a crispy breadcrumb topping, perfect for enhancing any meal with earthy flavors and a buttery finish.
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Total Time: 25 minutes
- Yield: 4 servings 1x
- Category: Side Dish
- Method: Roasting
- Cuisine: American/European
- Diet: Vegetarian
Ingredients
Mushrooms and Base
- 16 even-sized open cup mushrooms, stalks cut level
- 3 tbsp olive or vegetable oil
- salt and freshly ground black pepper to taste
Garlic Butter Mixture
- 3 tbsp unsalted butter, softened
- 2 cloves garlic, chopped very finely
- 2 tbsp fresh thyme, chopped
- 1½ tbsp lemon juice
- ½ tsp garlic powder
Topping
- 5 tbsp fresh breadcrumbs
Instructions
- Preheat Oven: Preheat your oven to 400°F (200°C) to ensure it’s hot enough to roast the mushrooms to golden perfection.
- Fry Mushrooms: Heat the olive or vegetable oil in a pan over medium-high heat and lightly fry the mushrooms cap-side down for 2-3 minutes. This step enhances their flavor and gives a nice sear.
- Arrange Mushrooms: Place the mushrooms in a 9×13 inch rectangular oven-proof dish or similar, with the stalks facing upwards to create a space for the filling.
- Prepare Garlic Butter Mixture: In a small bowl, combine the softened unsalted butter with finely chopped garlic, fresh thyme, lemon juice, and garlic powder. Season with salt and black pepper to taste. Mix until well combined.
- Fill Mushrooms: Spoon a small amount of the garlic butter mixture onto each mushroom stalk cavity, making sure to spread it evenly inside.
- Add Breadcrumbs: Lightly press fresh breadcrumbs on top of each buttered mushroom to create a crispy crust during roasting.
- Bake: Place the dish in the preheated oven and bake for 15 minutes or until the topping turns golden brown and the mushrooms are tender.
- Serve: Optionally, serve immediately while hot or refrigerate for later use. Reheat before serving to enjoy the best flavor and texture.
Notes
- Use even-sized mushrooms for uniform cooking.
- Softened butter is key for easy mixing and spreading.
- Fresh thyme can be substituted with dried thyme, reducing the quantity to 1 tsp.
- For a richer flavor, add a sprinkle of grated Parmesan before adding breadcrumbs.
- Leftovers can be refrigerated for up to 2 days and reheated in the oven to maintain crispiness.
Nutrition
- Serving Size: 4 mushrooms (approximately 1/4 of recipe)
- Calories: 110 kcal
- Sugar: 1 g
- Sodium: 150 mg
- Fat: 9 g
- Saturated Fat: 3 g
- Unsaturated Fat: 5.5 g
- Trans Fat: 0 g
- Carbohydrates: 6 g
- Fiber: 1.5 g
- Protein: 2 g
- Cholesterol: 10 mg
Keywords: roasted mushrooms, garlic mushrooms, thyme mushrooms, garlic butter mushrooms, vegetarian side dish, easy mushroom recipe