How long do you bake 1.25lb turkey breasts?

There is no such thing as a 1.25 lb turkey breast. They are generally between 2 and 4 pounds.

But if you do have a 1.25 lb turkey breast, you will need to bake it for about 1 hour and 15 minutes at 375 degrees Fahrenheit. To ensure the turkey breast is cooked through, you can use a meat thermometer to check the internal temperature, which should reach 165 degrees Fahrenheit.