When you spatchcock a turkey, you're butterflying it.

Take the turkey and flip breast side down. Cut along each side of the ridge from the tailbone to the neck.

While the turkey is still breast side down, take a cleaver and give the inside of the "V" of the breastbone a really good whack or two. Enough to make it "snapable". Flip over breast side up, pull the sides out flat and flatten. (Its going to seem like you're giving the bird some heavy duty CPR.)

Place some whole herbs on a large rack (I used a cookie cooling rack) and place the flattened turkey on it, breast side up. Tuck the wings in and snug up the legs a bit so it fits on the rack nicely

Place the rack over a large cookie tray to catch any drippings.

Bake at 350F for approximately 2 to 2.5 hours, until the internal temperature reaches at least 180.