Meatloaf Wellington

Name: Meatloaf Wellington
Ingredients: 1 egg, beaten; 1 cup celery, chopped; 1⁄2 cup milk; 3 slices white bread, crusts removed and torn into 1/4-inch pieces; 3⁄4 cup onion, chopped; 1 teaspoon poultry seasoning; 2 teaspoons salt; 1⁄4 teaspoon pepper; 1 1⁄2 lbs ground beef; 1⁄2 cup pine nuts, chopped; 2 (10 ounce) packagesfrozen patty shell pastry dough, thawed; 1⁄2 cup mushroom, slices and cooked (I cook in butter and garlic); 1 cup cheddar cheese, shredded; 1 egg, beaten with; 2 teaspoons water