Description
These Caramelized Onion & Gruyère Stuffed Mushrooms are a delightful appetizer or side dish that combines earthy mushrooms with sweet caramelized onions and rich Gruyère cheese. Perfect for entertaining or a cozy night in.
Ingredients
Scale
Mushrooms:
- 16 large white or cremini mushrooms (stems removed)
Caramelized Onions:
- 2 tablespoons olive oil
- 1 large yellow onion (thinly sliced)
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1 teaspoon fresh thyme leaves (or 1/2 teaspoon dried)
- 2 cloves garlic (minced)
Filling:
- 1/3 cup breadcrumbs
- 1/2 cup grated Gruyère cheese
- 2 tablespoons grated Parmesan cheese
- 1 tablespoon unsalted butter (melted)
- Chopped parsley for garnish (optional)
Instructions
- Preheat the oven: Preheat the oven to 375°F (190°C) and line a baking sheet with parchment paper.
- Cook the onions: Heat olive oil in a skillet, add onions, and cook until caramelized. Add garlic, thyme, salt, and pepper.
- Prepare the filling: Remove from heat, stir in breadcrumbs, Gruyère, and Parmesan cheese.
- Stuff the mushrooms: Spoon the filling into mushroom caps and drizzle with melted butter.
- Bake: Bake for 18–20 minutes until mushrooms are tender and filling is golden.
- Garnish and serve: Garnish with parsley and serve warm.
Notes
- You can prepare the filling up to a day in advance and refrigerate.
- Swap Gruyère with Swiss or Fontina if needed.
- Perfect as an appetizer or elegant side dish.
- Prep Time: 15 minutes
- Cook Time: 40 minutes
- Category: Appetizer
- Method: Baking
- Cuisine: French-Inspired
Nutrition
- Serving Size: 2 mushrooms
- Calories: 90
- Sugar: 2g
- Sodium: 160mg
- Fat: 6g
- Saturated Fat: 3g
- Unsaturated Fat: 2.5g
- Trans Fat: 0g
- Carbohydrates: 6g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 10mg
