Mushroom Piroshki Appetizers Recipe - Pillsbury.com

Ingredients

• 1/4 cup butter or margarine
• 1/2 cup finely chopped onion (1 medium)
• 1 package (8 oz) fresh mushrooms, finely chopped
• 1 hard-cooked egg yolk, chopped
• 1/2 to 3/4 teaspoon salt
• 1/4 teaspoon pepper
• 3 crusts from 2 boxes (14.1 oz) refrigerated Pillsbury™ Pie Crusts (2 Count), softened as directed on box
• 1 egg, beaten, if desired