Beef Empanadas with Chimichurri

Name: Beef Empanadas with Chimichurri
Ingredients: 1 tablespoon olive oil; 1/2 medium onion, chopped; 1/2 poblano chile, stemmed, seeded, and chopped; 3 garlic cloves, minced; 1/2 pound ground beef chuck; 1/2 tablespoon ground dried New Mexico chiles or chili powder; 1 teaspoon ground cumin; 1/2 teaspoon kosher salt; 1/4 cup canned crushed tomatoes; 1 tablespoon red wine vinegar; 1/4 cup golden raisins; 1/4 cup chopped green olives; Flour; 1 pkg. (about 1 lb.) frozen puff pastry, thawed; 1 large egg; Chimichurri (recipe follows)