01 -
1 sheet puff pastry, thawed
02 -
2 tablespoons unsalted butter
03 -
2 tablespoons olive oil
04 -
1 small yellow onion, finely diced
05 -
2 cloves garlic, minced
06 -
10 ounces cremini mushrooms, sliced
07 -
1 teaspoon fresh thyme leaves or 1/2 teaspoon dried thyme
08 -
Salt and black pepper, to taste
09 -
1/4 cup dry white wine (optional)
10 -
8 ounces cream cheese
11 -
3/4 cup Parmesan cheese, finely grated
12 -
1/2 cup Gruyère cheese, grated
13 -
1 teaspoon Dijon mustard (optional)
14 -
2 large eggs, divided
15 -
Fresh parsley, chopped (for garnish)