I had a few slices with grass fed butter and some slices with almond butter on top. (queenketo.com)
Depending on my mood, I sometimes add a tablespoon of grass fed butter right on top of the bird just before roasting but honestly, it does not make a huge difference. (thehealthyfoodie.com)
I include grass fed butter in my diets for this, and other reasons. (fitnessandpower.com)