Roasted Mushrooms with Garlic & Thyme Recipe
Introduction
These roasted mushrooms with garlic and thyme are a simple yet flavorful side dish perfect for any meal. The combination of fresh herbs, garlic butter, and crispy breadcrumbs adds depth and texture that mushroom lovers will appreciate.

Ingredients
- 16 even-sized open cup mushrooms, stalks cut level
- 3 tbsp olive or vegetable oil
- 2 cloves garlic, chopped very finely
- 3 tbsp unsalted butter, softened
- 2 tbsp fresh thyme, chopped
- ½ tsp garlic powder
- 5 tbsp fresh breadcrumbs
- 1 ½ tbsp lemon juice
- Salt and freshly ground black pepper to taste
Instructions
- Step 1: Preheat the oven to 400°F (200°C). Heat the oil in a pan and lightly fry the mushrooms, cap-side down, for 2–3 minutes until slightly softened.
- Step 2: Arrange the mushrooms in a 9×13 inch (or similar) oven-proof dish with the stalks facing upwards.
- Step 3: In a small bowl, combine the softened butter, finely chopped garlic, fresh thyme, lemon juice, garlic powder, salt, and pepper.
- Step 4: Spoon a small amount of the garlic butter mixture onto each mushroom stalk, then press the fresh breadcrumbs lightly on top.
- Step 5: Either refrigerate until ready to bake or place immediately in the oven and roast for about 15 minutes until the tops are golden and the mushrooms are cooked through.
Tips & Variations
- Use fresh breadcrumbs from a rustic loaf for best texture and flavor.
- Swap thyme for rosemary or sage for a different herb profile.
- Add a sprinkle of grated Parmesan cheese over the breadcrumbs before baking for an extra savory touch.
- If you prefer vegan, substitute the butter with olive oil or a plant-based margarine.
Storage
Store leftover roasted mushrooms in an airtight container in the refrigerator for up to 3 days. Reheat gently in a low oven or microwave to preserve moisture and texture without drying out.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use different types of mushrooms?
Yes, you can use cremini, button, or portobello mushrooms. Try to choose mushrooms of similar size for even cooking.
Can I prepare this recipe ahead of time?
Absolutely. Assemble the mushrooms with the garlic butter and breadcrumbs and refrigerate for up to 24 hours before baking. This makes it a convenient side for entertaining.
PrintRoasted Mushrooms with Garlic & Thyme Recipe
Savor the earthy flavor of roasted mushrooms enhanced with a fragrant garlic and thyme butter, topped with crispy fresh breadcrumbs and a hint of lemon juice. Perfect as a delicious side dish or an elegant appetizer, these mushrooms are oven-roasted to golden perfection, delivering a warm and savory treat that’s easy to prepare.
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Total Time: 25 minutes
- Yield: 4 servings 1x
- Category: Side Dish
- Method: Roasting
- Cuisine: American
- Diet: Vegetarian
Ingredients
Mushrooms
- 16 even-sized open cup mushrooms, stalks cut level
- 3 tbsp olive or vegetable oil
- salt and freshly ground black pepper to taste
Garlic Thyme Butter
- 3 tbsp unsalted butter, softened
- 2 cloves garlic, chopped very finely
- 2 tbsp fresh thyme, chopped
- 1 1/2 tbsp lemon juice
- ½ tsp garlic powder
Topping
- 5 tbsp fresh breadcrumbs
Instructions
- Preheat and fry mushrooms: Preheat your oven to 400°F (200°C). Heat the olive or vegetable oil in a pan over medium-high heat. Add the mushrooms cap-side down and lightly fry for 2-3 minutes until they start to brown.
- Arrange in baking dish: Transfer the fried mushrooms to a 9×13 inch (or similarly sized) rectangular oven-proof dish, placing them with the stalks facing upwards to hold the filling.
- Prepare garlic thyme butter: In a small bowl, combine the softened unsalted butter with finely chopped garlic, fresh thyme, lemon juice, and garlic powder. Season with salt and freshly ground black pepper to taste, mixing thoroughly to create a flavorful butter spread.
- Assemble mushrooms: Spoon a little of the garlic thyme butter onto each mushroom stalk. Then gently press fresh breadcrumbs on top of each buttered mushroom to form a crunchy topping.
- Roast in oven: Either refrigerate the assembled mushrooms for later use or bake immediately. Place the dish in the preheated oven and roast for 15 minutes or until the mushrooms are cooked through and the breadcrumb topping is golden brown around the mushroom caps.
Notes
- Ensure the butter is softened before mixing to create a smooth garlic thyme butter.
- You can use either olive oil or vegetable oil for frying based on your flavor preference.
- Fresh breadcrumbs give the best crunch, but store-bought can be used as a substitute.
- If preparing ahead, refrigerate assembled mushrooms covered with foil and bake when ready.
- Adjust seasoning according to taste, especially the salt and pepper in the butter mixture.
Keywords: roasted mushrooms, garlic mushrooms, thyme mushrooms, vegetarian side dish, oven roasted mushrooms

