Roast Beef Potpie

Ingredients

• 10 fresh baby carrots, chopped
• 6 small red potatoes, cubed
• 1 medium onion, chopped
• 2 tablespoons olive oil
• 1 package (17 ounces) refrigerated beef roast au jus, coarsely chopped
• 2 tablespoons minced fresh cilantro
• 1/4 teaspoon salt
• 1/4 teaspoon pepper
• 1/3 cup all-purpose flour
• 2-1/4 cups reduced-sodium beef broth
• 1 sheet refrigerated pie pastry
• 1 egg, beaten