@novamc1
If I'm not mistaken the frozen turkey breast you are referring to at Costco is the boneless one.
Cooking directions are on the bag, this is a little different than a bone in turkey breast.
I believe they are 4-1/2# turkey breasts, I place in a stainless steel roasting pan, run with soft butter, sometimes stick some butter under the skin and sprinkle with McCormick's Seasoning Salt. Follow baking guidelines, one of the easiest poultry to cook.
I saw them but didnt buy one (yet)