I made this the other night and it was quite possibly the best recipe I've used yet.

take a deer backstrap and cut it into two equal length pieces.
Marinate it in your favorite marinade for the amount of time you prefer( I like allegro hot and spicy)
remove it from the marinade and butterfly the straps lengthwise
Put some cream cheese on one side of each butterflied strap then chop a medium onion and some jalapeno peppers put the onions and peppers on the cheese.
close up the butterflied straps and wrap in bacon and secure with toothpicks (I put some garlic powder and salt and pepper inside and out before wrapping)

Broil in the oven in acaserole dish@ 500deg. for 15mins or so or cook on the grill until the meat is a good med. rare to med.