My youngest is completely dairy free and some of his favorites are:
quesadillas - just beans and nutritional yeast
breakfast - I have a dairy free waffle/pancake recipe, bacon, eggs, toast
veggie pancakes - I usually do potato and zucchini, but you can add any shredded veggie. Just shred, mix with an egg and some seasoning, drop a spoonful into a pan of hot oil and fry until brown.
spaghetti - we use beef and add veggies to the sauce
cucumber and tomato salad - just chop up with some onions and add italian dressing. My kids won't eat that though.
any kind of veggie or fruit grilled - I make ham and pineapple kabobs for my kids alot and they love them.