- 1 tablespoon butter
- 1 tablespoon olive oil
- 1 small onion, sliced
- 8 ounces cremini mushrooms, sliced
2 cloves garlic, chopped
- 1 teaspoon thyme, chopped
- 1/4 cup white wine or broth
- salt and pepper to taste
- 1 tablespoon parsley, chopped
- 1/2 teaspoon truffle oil (optional)
- 1 cup fontina or gruyere, shredded
- 1/4 cup parmigiano reggiano, grated
- 4 slices bread
- 2 tablespoon butter
How to make it:
Melt the butter and heat the oil in a pan over medium heat.
Add the onion and saute until tender, about 5-7 minutes.
Add the garlic and thyme and saute until fragrant, about a minute.
Add the cremini mushrooms and saute until the start to caramelized and turn golden brown, about 10-15 minutes.
Add the wine, deglaze the pan and cook until most of the liquid has evaporated, about 2-3 minutes.
Season with salt and pepper, add the parsley and remove from heat and let cool a bit.
Mix the cheese into the mushrooms.
Butter one side of each slice of bread and place 2 in the pan buttered side down.
Top each with 1/2 of the mushroom mixture and finally the remaining slices of bread with the buttered side up.
Grill until the cheese has melted and the bread is golden brown, about 2-4 minutes per side.
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