Tips for Nutritious Meals?

My daughter is not a very picky eater but I find that she really liked mac n cheese (even made with whole wheat pasta) and mea with sauce. But. she's started disliking the food we feed her ourselves and is very into self feeding. hes 16 months old. What can I give her other than just plain fruit and veggies that she might like that is more nutritious than meat and hotdogs etc.?