Heat the oven to 375°F. Beat the egg and water in a small bowl with a fork or whisk. Unfold the pastry sheets on a lightly floured surface. Trim about 1 inch off the corners of each pastry sheet.

Brown ground beef with onion in 12-inch skillet, stirring occasionally, 8 minutes or until onion is tender; drain if desired. Stir in chili powder and cook 30 seconds. Stir in beans and Pasta Sauce.