Combine the ingredients. In a small bowl, combine the butter, garlic, parsley, thyme, and salt to taste. Mix with a fork until well blended.
Shape and freeze. Place the butter mixture onto a piece of plastic wrap and roll it into a log shape. Put it in the freezer for 30 to 40 minutes until firm and ready to slice.
For The Chicken
Prep the chicken breasts. Place each chicken breast onto your work surface and slice it horizontally, without cutting all the way through. Open the chicken breasts like a book and lay them flat.
Pound the chicken and season it. Put the chicken breast between two pieces of parchment paper or plastic wrap, and pound with a meat mallet to flatten. Season both sides with salt and pepper.
Add the compound butter. Cut the frozen garlic butter log into four equal pieces. Place one piece of the frozen garlic butter in the center of each chicken breast, and fold the chicken over the butter, gathering the sides to form a round ball or a log.
Partially freeze the chicken. Wrap each chicken piece in plastic wrap and twist the ends tightly. Place the wrapped chicken pieces in the freezer for about 1 hour, or until the seams have frozen (this helps the chicken hold its shape and not leak the butter filling during cooking.
For The Breading and Frying.
Prep. Preheat your oven to 400°F and set out a 9x13 baking dish. Heat the vegetable oil in a large saucepan or Dutch oven to 350°F.
Set out three shallow bowls for the breading. Place flour and 1/2 teaspoon salt in one bowl, the beaten eggs in another, and the breadcrumbs in the third bowl.
Bread the chicken. Unwrap the chicken breasts and discard the plastic wrap. Roll each chicken piece in flour, then in the egg, and finally in the breadcrumbs, making sure to coat them evenly.
Fry. Deep fry each chicken piece for 2 to 3 minutes, or until golden brown on all sides. Transfer all the fried chicken pieces to the baking dish.
Bake. Transfer the baking dish to the oven and bake the chicken for 15 to 20 minutes, or until the internal temperature reaches 165˚F. Cooking time will depend on the thickness of the chicken.
Rest and serve. Remove your chicken Kiev from the oven and transfer to a plate or cutting board; let it rest for 5 to 8 minutes before serving.
Notes
Chicken Breasts: This recipe requires boneless, skinless chicken breasts.
Softened Butter: Pull the butter out of the fridge for about 20 to 30 minutes before you start working with it.
Breadcrumbs: Use your favorite plain breadcrumbs, but you can also use Panko crumbs.
Leftover Chicken Kiev can stay in the fridge for about three to four days, stored in an airtight container. To reheat, place the chicken in an ovenproof dish and reheat it at 350°F for 10 to 12 minutes or until hot.
You can make this ahead by preparing the Chicken Kiev pieces and freezing them before you cook them. That way, they'll be freshly cooked just before serving instead of just reheated. To freeze, place the formed, uncooked chicken Kiev pieces in the freezer to firm. Then, transfer the frozen pieces into airtight containers or freezer bags for long-term storage. Use them within three months.