Preheat the oven to 325F.
Set the turkey breast on a roasting rack set on a pan. Blot the turkey breast with paper towels to dry and salt generously.
Roast the turkey breast for approximately 2 hours, until an instant read thermometer reads 150F.
Paint the jam on the turkey breast to coat. Reduce the oven temperature to 300F. Continue roasting the turkey breast until the jam darkens into a sticky glaze.
When the temperature of the turkey breast is a few degrees below 165F, remove it from the oven. Tent it lightly with aluminum foil and let it rest. The meat will continue to cook for a while outside of the oven, so the internal temp should rise to 165F during the resting period.
After 20-30 minutes of resting, the turkey is ready to carve and serve.