Round Steak with Creamy Horseradish Sauce

Mouth-watering round steak served with a rich creamy horseradish sauce. And so easy to prepare! 1 pound boneless round steak 3 garlic cloves, divided Cooking spray 1/2 teaspoon salt, divided 1/8 teaspoon coarse ground black pepper 1/3 cup sour cream 2 tablespoons...