If anyone's still curious about this, we cooked up the heart as our contribution for my fiance's family Thanksgiving. His brother and dad had expressed interest in trying the heart.
We cleaned it, cubed it, and cooked it overnight in the crockpot (about 8 hours) with a couple glasses of dry red wine, some Worcestershire sauce, garlic, onion, salt, pepper, and a touch of hot sauce. It smelled amaaaaazing while it cooked (it even woke me up, it smelled so good!) and it tasted just as good. I was so pleased with how it turned out! I wish it were a little easier to find, because it's pretty cheap (it was from a local farm and I think it cost $2/lb). Anyway, that's how we did it, and it was a success.
