Black Walnut and Cherry Strudel

Ingredients (11)

• + 1 large egg, beaten add to pantry
• + 1 tablespoon water add to pantry
• + 1 (8 ounce) package cream cheese, softened add to pantry
• ✓ ½ cup white sugar
• ✓ 1 tablespoon lemon juice
• + 2 sheets frozen puff pastry, thawed add to pantry
• + 1 (12 ounce) bag frozen dark cherries add to pantry
• + 8 ounces chopped black walnuts add to pantry
• + ½ cup confectioners' sugar add to pantry
• + 2 teaspoons milk, or more as needed add to pantry
• ✓ 1 teaspoon vanilla extract