I usually cut my backs strap in half length ways. Marinate for 1-4 hours in a little olive oil, rosemary, salt, pepper, minced garlic, and a splash of red wine. Pull the slab of meat out of the marinate and throw it on a 350-450 degree grill for maybe 7 minutes on each side, remove, rest for 10-15 minutes under aluminum foil, then slice into medallions. Should be medium rare in the middle, with a decent sear on the outside. This simple prep will blow you mind. I don’t like hiding the meat flavor by breading and frying. I don’t even bread my cubed cuts. And please don’t bother cubing the backstrap. I’ve never had one that was even remotely tough. I cube the tougher cuts off the ham, or leave them whole for roasts.