This is one of my favorite dishes to do. I love white meat and get a good sized turkey breast for around $8. It provides at least 2 dinners for me and my wife and a few lunches. Great value.
We use an electric roaster for around 2 to 2 and half hours on 375. We also use an injector thingie. Sometimes inject it with minced hatch green chiles. Sometimes garlic, sometimes rosemarry from our garden, sometime a combination of things. I think my wife also rubs butter on the skin.
Having a roaster is key. Can pick up a good one for around $30 at walmart that also has buffer servers. This is an excellent, excellent habit to get into. Fairly easy, extremely tasty, pretty healthy if you do not eat the skin, great value. And for me a turkey lover, white meat non-processed turkey. Love it.