Mushrooms and Onions Recipe

Discover the ultimate mushroom onion recipe with these perfectly roasted onions and mushrooms. This easy-to-make dish boasts a harmonious blend of caramelized onions and tender mushrooms in a rich garlic butter sauce, delivering an irresistible taste that perfectly enhances steak, pasta, chicken, and more! Best of all, you'll need just 5 minutes of hands on prep to make them.

📝 Ingredients

• 1 pound Mushrooms ( – cleaned and stems trimmed to be flush with the caps (Cremini or White Button))
• 8 ounces Pearl Onions (– defrosted if frozen (SEE NOTES))
• 2 TBS Olive Oil (- good quality)
• to taste Sea Salt & Ground Black Pepper
• 5 TBS Unsalted Butter (– cut into cubes)
• 1/3 Cup Dry White Wine (- one you like to drink)
• 2-3 cloves Garlic ( - minced)
• 2 tsp EACH: Fresh Thyme and Fresh Oregano (– chopped, plus more sprigs for roasting)
• Optional Garnishes: Fresh Parsley and Lemon Wedges

👨‍🍳 Instructions

1. 1Preheat Oven: Arrange oven rack to the middle position and then preheat the oven to 425 degrees F.
2. 2Season Mushrooms and Onions: Place the mushrooms and onions on a large, rimmed baking dish. Drizzle the oil evenly over the veggies and then season with a pinch of salt and pepper. Arrange the onions and mushrooms in a single, even spaced layer, with the mushrooms facing stem-side-down. Drop 4 sprigs of fresh thyme and 2 sprigs of rosemary on top of the mushrooms and onions.
3. 3Partially Roast Mushrooms with Onions: Partially roast: Place mushrooms and onions in the oven. Roast for 15 minutes or until lightly browned.
4. 4Meanwhile, Make Garlic Butter Sauce: Meanwhile, Make the Butter Sauce: In a large, microwave-safe liquid measuring cup, combine the butter with the wine, garlic, thyme and oregano. Season with ¼ teaspoon salt and 1/8 teaspoon pepper. Microwave at 50% power for 1 minute. Stir the butter sauce and return to the microwave. Heat again on 50% power for 1 1/2 minutes in 30 second increments. (SEE NOTES)
5. 5Toss Onions and Mushrooms with Butter Sauce: Remove the mushrooms and onions from the oven. Then drizzle the butter sauce evenly over the veggies and gently toss or stir to coat them in the butter.
6. 6Finish Roasting: Return the onions and mushrooms to the oven and continue roasting for 5-10 minutes, or until mushrooms are browned and tender. Taste the veggies and adjust for seasoning with salt and pepper.
7. 7Serve Mushrooms with Onions: Transfer mushrooms and onions to a serving dish. Then, drizzle any remaining butter sauce in the baking dish all over the mushrooms and onions. Garnish with fresh herbs and lemon, if using. Enjoy immediately!