Beef Empanadas

Name: Beef Empanadas
Ingredients: 2 tbsp. olive oil; 1 large onion, finely chopped; None Kosher salt and pepper; 0.75 lb. lean ground beef; 2 cloves garlic, finely chopped; 1 tsp. smoked paprika; 3 tbsp. tomato paste; 0.5 c. low-sodium chicken broth; 0.333 c. raisins, chopped; 0.333 c. small pimiento-stuffed olives, chopped, plus 1 tablespoon brine; None Spiced Pie Dough; 1 large egg, beaten (optional); None Sour cream, for serving (optional)