sluttygran how incredibly sad that pressure from your family to embrace a vegan diet means you no longer enjoy your meals. Have they no respect for your right to eat as you choose? Nobody has the right to dictate that another family member must go along with someone else's fancy.
I love catering for one! If I've picked up a reduced joint I'll do an indulgent full roast with all the trimmings. I freeze portions of cooked meat, and freeze the rest of the carcass until I have a few to make a big batch of stock which again gets frozen in small portions. A slow-cooker casserole, or steak pie, lasagne or fish pie to last a few days or portion and freeze, a quick salmon fillet or a chop with potatoes and peas, or a day eating mainly cheese or eggs - in omelettes or on toast - I get lots of variety and it's great to be eating whatever I want that day. I grow most of my vegetables, and soft fruit, so I make lots of soup and crumbles. I like baking so there's always bread, cake or biscuits, and if all I want is cereal or pancakes that's ok too!