Introduction
Roasting mushrooms is a simple yet delightful way to enhance their natural flavors. With just a few ingredients and a little patience, you can create a dish that is both delicious and versatile. This article outlines a straightforward recipe for roasting both button and large portobello mushrooms, providing an option for a finishing touch that elevates the dish even further.
Detailed Ingredients with measures
500g / 1lb mushrooms, choice of button or Swiss brown / cremini OR 8 large portabello mushrooms
50g / 3 tbsp unsalted butter, melted
1 tbsp olive oil
2 garlic cloves, finely minced
1/2 tsp each salt and pepper
OPTIONAL FINISHING FLAVOUR:
1 1/2 tbsp lemon juice
1 tsp fresh thyme leaves (parsley also good for colour)
Prep Time
10 minutes
Cook Time, Total Time, Yield
Cook Time: 25 minutes
Total Time: 35 minutes
Yield: 4 servings as a side
Roasting mushrooms is a straightforward process that requires minimal preparation. Start by preheating your oven and preparing the mushrooms with butter, olive oil, garlic, salt, and pepper. Once they are in the oven, the aroma of roasting mushrooms will fill your kitchen, making it hard to resist the final dish. Enjoy your roasted mushrooms as a side dish or on a bed of polenta, with ricotta on toast, or even alongside creamy mashed potatoes to soak up the delicious juices.
Detailed Directions and Instructions
Preheat the Oven
Preheat your oven to 220°C/450°F (200°F fan).
Prepare the Mushrooms
In a large bowl, toss the mushrooms with the melted butter, olive oil, minced garlic, salt, and pepper. Use a rubber spatula to ensure the mushrooms are well coated.
Roast the Mushrooms
Spread the coated mushrooms evenly on a baking tray. Roast them in the preheated oven for 25 minutes without tossing or turning.
Add Optional Flavors
After 25 minutes, remove the mushrooms from the oven. If you are using lemon juice and fresh thyme, push the mushrooms together to one side of the tray. Drizzle with lemon juice, sprinkle with thyme, and toss gently. Serve immediately.
Roasting Large Mushrooms (Portobello)
For larger mushrooms, such as portobello, place them cap side down (with stems facing up) in a medium baking dish, ensuring they are snug. Spoon 1 tsp of butter over each mushroom and brush the edges with the remaining butter. Drizzle olive oil over the mushrooms and sprinkle with salt and pepper.
Cooking Time for Large Mushrooms
Roast the large mushrooms for 20 minutes if you prefer them tender but still slightly firm, or for 25 minutes if you prefer them completely tender. Do not turn the mushrooms during roasting. There will be juices both in the pan and pooled in the mushroom caps.
Finishing Touches
After roasting, squeeze a bit of lemon juice over the mushrooms and sprinkle with thyme. Serve the mushrooms drizzled with the pan juices.
Notes
Serving Suggestions
These roasted mushrooms pair well with polenta (quick cook), garlic sautéed spinach, or on toast spread with ricotta. They are also delightful with mashed potatoes or any dish that can soak up the flavorful juices, such as low carb creamy mashed cauliflower. However, the sauce is not enough to coat pasta, but you could use a small serving alongside.
Nutritional Information
The recipe serves 4 as a side dish.

Cook techniques
Roasting Mushrooms
To roast mushrooms, preheat the oven to 220°C/450°F (200°F fan). Combine cleaned mushrooms with melted butter, olive oil, minced garlic, salt, and pepper in a bowl. Arrange the mushrooms on a baking tray and roast for 25 minutes without turning them.
Roasting Large Mushrooms (Portabello)
For larger mushrooms, place them cap side down in a snug baking dish. Spoon melted butter over each mushroom and drizzle olive oil around the edges. Season with salt and pepper, then roast for 20 to 25 minutes. The mushrooms will release juices while cooking.
Finishing Touch with Lemon and Thyme
After removing roasted mushrooms from the oven, optionally push them to one side of the tray. Drizzle with lemon juice and sprinkle fresh thyme leaves over them. Toss gently and serve immediately for added flavor.
Serving Suggestions
Consider pairing roasted mushrooms with sides such as polenta, sautéed spinach, or toast spread with ricotta. They are also delicious served alongside mashed potatoes or creamy mashed cauliflower to soak up the juices.
FAQ
What types of mushrooms can I use for this recipe?
You can use button, Swiss brown, cremini, or large portabello mushrooms.
Can I make this dish ahead of time?
Roasted mushrooms are best served fresh but can be prepared a few hours in advance and reheated gently in the oven.
How can I store leftover roasted mushrooms?
Store leftover mushrooms in an airtight container in the refrigerator for up to 3 days. Reheat in the oven or a skillet before serving.
What if I don’t have fresh thyme?
If fresh thyme is not available, you can substitute it with fresh parsley for color and flavor.
Can I add other seasonings to the mushrooms?
Yes, you can customize the flavor by adding other herbs or spices, such as rosemary, oregano, or red pepper flakes, to your taste.
Conclusion
Roasting mushrooms brings out their rich, umami flavor, making them a versatile addition to various dishes. Whether you enjoy them as a side dish or incorporate them into your favorite meals, these roasted mushrooms can elevate any plate with their delicious taste and texture.
More recipes suggestions and combination
1. Polenta and Garlic Sautéed Spinach
Serve the roasted mushrooms alongside creamy polenta and sautéed spinach for a wholesome, satisfying meal.
2. Toast with Ricotta
Spread ricotta cheese on toasted bread and top with roasted mushrooms for a delightful appetizer or light lunch.
3. Mashed Potatoes
Combine roasted mushrooms with creamy mashed potatoes to create a comforting and flavorful side dish that complements any main course.
4. Creamy Mashed Cauliflower
For a low-carb option, pair the mushrooms with creamy mashed cauliflower, allowing the juices to enhance the dish.
5. Stuffed Peppers
Use roasted mushrooms as a filling for stuffed peppers, mixing them with quinoa or rice and your choice of vegetables for a hearty meal.
6. Pasta Salad
Incorporate the roasted mushrooms into a pasta salad with fresh vegetables and a light vinaigrette for a refreshing dish.
7. Frittata
Add roasted mushrooms to a frittata mixture for a savory breakfast or brunch option that’s sure to impress.
8. Grain Bowls
Top grain bowls with roasted mushrooms for added flavor and nutrients, combining with greens, nuts, and a dressing of your choice.

