Scallop Pie

Ingredients

• 1 1/4 lbs scallops
• 3 -4 ounces mushrooms, sliced not too thin (see note) or 3 -4 ounces canned mushrooms, sliced and drained
• 1 1/2 cups dry white wine
• 2 tablespoons butter
• 2 tablespoons flour
• 1/4 teaspoon salt
• 1/2 cup cheddar cheese, shredded
• 2 cups mashed potatoes
• 2 tablespoons butter
• 1 egg