Preheat oven to 400 degrees F. Lightly grease a rimmed baking sheet or line with a silicone mat.
Mix together all the sauerkraut ball ingredients.
Form into 1 inch balls. Bake for 20 minutes, or until browned.
In the meantime prepare the sauce: In a small bowl combine all of the Apple Mustard Sauce ingredients.
Place the Sauerkraut balls on a serving platter or plate. Serve with the sauce.
