Deer heart is very good! I slice it in two pieces to get out all the connective tissues/etc. then soak it in salt water. I then slice it, roll in flour and fry it like backstrap steaks. I used to boil it till tender then cool an put on a sandwich, but older deer are a tad more gamy tasting to me. Taste just like beef!!
I only got two hearts this year that were edible. The other three were shot up too bad to save...