French Onion Stuffed Mushrooms

4.28 from 11 votes

French Onion Stuffed Mushrooms

This French Onion Stuffed Mushrooms recipe is the appetizer you didn't know you needed but won't be able to live without. Imagine perfectly cooked mushrooms cradling a savory mix of caramelized onions and rich Gruyère cheese. Each bite is a cozy hug for your taste buds, perfect for impressing guests or treating yourself.

Prep Time30

Cook Time15

Total Time45

Course: Appetizer

Cuisine: French

Keyword: french onion stuffed mushrooms, stuffed mushrooms

Servings:

Calories: 155kcal

Author: Joanna Cismaru

Ingredients

For the filling

2 tablespoon butter unsalted
2 onions sliced
24 mushroom stems
1 teaspoon Worcestershire sauce
¼ cup white wine
½ cup Gruyere cheese
¼ teaspoon salt or to taste
¼ teaspoon pepper or to taste

Stuffed Mushrooms

24 cremini mushrooms stems removed (needed for filling)
1 tablespoon butter unsalted
1 tablespoon chives chopped

US Customary - Metric

Instructions

Preheat oven to 325℉.
In a skillet add 2 tablespoons of butter and melt it over medium heat.
After the butter has melted, add the sliced onions. Now you have to cook the onions for about 20 minutes.
To the onions, add the chopped mushroom stems.
Add some salt and pepper, the white wine and the Worcestershire sauce. You'll now need to let it cook for another 5 minutes or so, so that the liquid cooks down.
In another large skillet that is oven proof, melt a little bit more butter, about a tablespoon and add the mushrooms. You can sprinkle some salt and pepper over them.
Cook them for a couple minutes on each side. Spoon the onion filling in each mushrooms, about a tablespoon in each.
Top each mushroom with Gruyere cheese.
Bake the mushrooms for about 10 to 15 minutes at 325℉ or until the cheese has melted nicely and is golden brown.

Notes

Opt for yellow onions for the sweetest caramelization.
Use a good quality white wine that you’d enjoy drinking.
Make sure to clean mushroom caps with a damp paper towel for best results.

Nutrition