This appetizer recipe of mushroom and gruyère crostini is made with sautéed mushrooms cooked in red wine. They’re served on a crunchy slice of toasted French bread with melted gruyère.

Ingredients
- French Baguette
- Butter
- Garlic Salt
- Gruyère Cheese
- Cremini (Baby Bella) Mushrooms
- Soy Sauce
- Red Cooking Wine
- Thyme
How to Make Mushroom and Gruyère Crostini
- Preheat the oven to 400℉.



- Slice the baguette into ½″ slices diagonally. Lay them flat on a baking sheet. Melt 3 tablespoons butter with garlic salt. Brush the tops of the bread slices with garlic-salted butter. Add gruyère cheese to the top of each bread slice.


- Bake the bread slices in the oven for 4-5 minutes until the cheese is melted.


- Melt 3 tablespoons of butter in a large skillet over medium-high heat. Add sliced mushrooms and cook 5-7 minutes until they are tender.
- Add red wine, soy sauce, and thyme. Stir to coat mushrooms and cook an additional 1-2 minutes.


- Add sautéed mushrooms on top of the melted cheese on each crostini.
Variations
- Try different mushrooms in this recipe like shiitake, white button, oyster, or any bunch of wild mushrooms you like.
- A spreadable cream cheese, mascarpone, or ricotta can replace the gruyère. Jarlsberg is another tasty option.
- Add different fresh herbs, like oregano, tarragon, or rosemary, instead of thyme.

Make-Ahead
To make the recipe ahead of time, get all of the prep work out of the way.
Slice the bread and mushrooms the day before. Place the bread in an airtight container. Clean and slice the mushrooms, then sauté with the butter, soy sauce, red cooking wine, and thyme. Place them in the fridge.
When you’re ready, let the mushrooms come to room temperature or heat them slightly on the stove or in the microwave.
Butter and garlic salt the bread slices, add the cheese, and bake in the oven. Then top with mushrooms and serve.
Recommended Recipes
- Air Fryer Stuffed Mushrooms
- Beef Tenderloin Crostini with Creamy Basil Sauce
- Creamy Boursin Bruschetta
- Garlic Bread Soup Shooters
- Mini Beef Wellington Bites
- Mushroom Steak Sauce
- Steak Frites Appetizer
- Tomato and Mozzarella Bruschetta

Mushroom and Gruyère Crostini
Ingredients
- 16-20 ounces French Baguette ½" slices
- 6 tablespoons Butter divided
- 1 teaspoon Garlic Salt
- 4 ounces Gruyère Cheese sliced or shredded
- 8 ounces Cremini (Baby Bella) Mushrooms
- 1 tablespoon Soy Sauce
- 1 tablespoon Red Cooking Wine
- ½ teaspoon Thyme
Instructions
- Preheat the oven to 400℉.
- Slice the baguette into ½" slices diagonally. Lay them flat on a baking sheet. Melt 3 tablespoons butter with garlic salt. Brush the tops of the bread slices with garlic-salted butter. Add gruyère cheese to the top of each bread slice.
- Bake the bread slices in the oven for 4-5 minutes until the cheese is melted.
- Melt 3 tablespoons of butter in a large skillet over medium-high heat. Add sliced mushrooms and cook 5-7 minutes until they are tender. Add red wine, soy sauce, and thyme. Stir to coat mushrooms and cook an additional 1-2 minutes.
- Add sauteed mushrooms on top of the melted cheese on each crostini.






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