Yield: 6-8 servings.

For the meat loaf:
½ cup grated onion
2 teaspoons Worcestershire sauce
½ cup whole milk
½ cup fresh parsley, chopped
1 cup fresh bread crumbs
2 eggs
¼ cup ketchup
1 pound ground chuck
1 pound ground sirloin
2 teaspoons salt
½ teaspoon black pepper

For the glaze:
½ cup ketchup
¼ cup balsamic vinegar
2 tablespoons brown sugar

Preheat oven to 350°. In a large mixing bowl, combine onion, Worcestershire sauce, milk, parsley, bread crumbs, eggs, and ketchup. In a separate mixing bowl, combine ground sirloin with ground chuck. Mix in salt and pepper. Pour bread crumb mixture over ground beef and mix until all ingredients are well combined. Form meat mixture into an 8-inch loaf pan and bake for 1 hour. Remove meat loaf from oven and cover with foil. Allow to rest for 10 minutes.

For the glaze: In a saucepan, heat ketchup, vinegar, and brown sugar on low heat. Stir until sugar has dissolved. Spoon glaze over meat loaf before serving.