Ingredients
4 tablespoons unsalted butter
2 tablespoons olive oil
1/2 Spanish onion
8 ounces white mushrooms, sliced 1/4-inch thick
8 ounces portobello mushrooms, stemmed and sliced 1/4-inch thick
4 sprigs fresh rosemary
1 teaspoon kosher salt
1/2 teaspoon freshly ground black pepper
2 tablespoons dry white wine
4 ounces blue cheese, crumbled
1 cup heavy cream
1 bread boule, hollowed out
1 baguette, sliced, for serving
Preparation
Put the butter and olive oil into a large skillet and set over medium heat. Slice the onion into thin slivers and add them to the melted butter. Reduce the heat to low and cook the onions for 15 minutes until translucent. Add the mushrooms, rosemary, salt and pepper, and raise the heat to medium and cook, stirring occasionally, until the mushrooms give up their liquid. Let the mixture simmer until the mushroom liquid has reduced by 3/4. Add the white wine and reduce again until the pan is almost dry. (The recipe can be made to this point the day before if you like. Reheat the mushroom mixture to continue with the recipe.) Add the crumbled gorgonzola and heavy cream. Bring to a simmer and reduce by half. Season, to taste, with salt and pepper, and spoon into the hollowed out boule.
