I love sneaky veg recipes.
My fave is meat and veg burgers.
Make breadcrumbs in blender from 2 thick crusts or slices of bread (white or brown but not granary), and put in mixing bowl.
Blend a large red onion (chopped) with one egg, 4 cubes of defrosted and drained spinach and a chopped up bulb of fennel until it's a smooth foam in the blender. Add to mixing bowl with pinch of salt, pepper, thyme and nutmeg. Stir in 500g of family's favourite minced meat. (Goes best with pork imho, but any will do.)
If the spinach looks too suspiciously green, add some tomato puree to counteract the colour, until the whole lot looks brownish.
Make into burgers and grill or bake, turning once until cooked. Makes about 8-10 burgers. Hide burgers in proper burger buns with ketchup, so they don't see the colour. I've never met a child who doesn't scoff these down.
Or make tomato sauce with red onions, red and orange peppers, carrots, courgettes and mushrooms with passata or chopped onions. Reduce sauce till its quite thick and blend for ages and ages until it's lump free, then use it on home made pizzas, covered in mozzarella, or as a base for spag bol etc. As long as it just looks red they don't object.
I also grate parsnip and celeriac into cottage pie meat base - no one notices, then serve with peas and carrots. I blend onions, celery and mushrooms into the sauce of meat casseroles. As long as it's blended into a thick gravy, not visibly veg, they love it.