To bake turkey breast, place on rack in shallow roasting pan. Insert meat thermometer into thickest part of breast. Brush turkey with apple butter mixture. Cover; bake at 325°F. for 1 hour. Uncover; bake an additional 15 to 30 minutes, brushing turkey occasionally with apple butter mixture.
Bone-in whole turkey breast grills beautifully. You can purchase them in a variety of sizes so if yours is slightly smaller or larger than what we've called for here, adjust the grilling time accordingly.