Mushroom Pie

Ingredients

• 1 tablespoon olive oil
• 1 (10 ounce) package fresh mushrooms, sliced
• 1 large onion, chopped
• 4 slices bacon, chopped
• 0.75 cup heavy cream
• 1 cup shredded Swiss cheese
• salt and pepper to taste
• 1 teaspoon chopped fresh dill
• 1 (17.25 ounce) package frozen puff pastry, thawed
• 1 egg, beaten