How Long To Cook Boneless Turkey Breast In Convection Oven. A meat thermometer inserted into the middle of the breast should read 170 degrees f. The temperature should be 140° f.

Before you remove the stuffing and carve, let your turkey breast stand for 15 minutes to allow the juices to set. How long does it take to cook an 8 pound turkey breast in a convection oven? Preheat oven to 350 degrees f on the convection setting.