Heating up food in the oven without aluminum (no microwave)

Hi! This isn’t seed oil specific but I feel like folks here might be able to help w my question that’s still in the healthy food-related space: I’ve gotten rid of my microwave and only heat up my food in the oven now but recently learned that using aluminum foil for that is bad! Any recs for heating things up in the oven? I researched for oven safe dishes but couldn’t find any that were actually made for heating things up and that had a lid option (great so things don’t get too dry). Thank you so much for any help in advance! Xo