Do you have any onion marmalade stuff?
Pork loins are very nice, grilled on both sides, then put a dollop of onion marmalde and some blue cheese on top, and grill until cheese melted. DD's favourite thing ever, she could eat this every day.
Or, mix some wholegrain mustard with some honey, marinade together, then cook in the oven.
Marinade in olive oil, juice of a lemon, torn sage leaves, a smashed garlic and a chopped onion, plus salt and pepper, marinate in bag overnight. Very nice and subtle sage and onion flavour.
Is good to add some liquid of some description - pork loin steaks are very lean and can be dry if cooked plain.