Beef Empanadas Recipe

Name: Beef Empanadas Recipe
Ingredients: 3 cups all-purpose flour; 1 teaspoon kosher salt; 1 teaspoon baking powder; ½ cup unsalted butter (cold and cut into small cubes (1 stick)); ¾ cup cold water; 1 large egg (lightly beaten); ¾ pound lean ground beef; ½ yellow onion (diced); 4 cloves garlic (minced); 1 jalapeño pepper (finely chopped); 2 tablespoons tomato paste; 2 teaspoons ground cumin; 1 teaspoon dried oregano; ½ teaspoon kosher salt; ¼ teaspoon ground black pepper; ½ cup frozen peas