My kids don't eat real food. Any advice on getting them to branch out?

My five year old thumbs her nose at everything, and right now she's living off of fruit, hot dogs, chicken nuggets, pasta, and pierogies. She won't even think of touching a vegetable. She doesn't eat any decent proteins and the only calcium she gets is through string cheese and GoGurt. Because of this, I limit her candy/sugar intake as much as I can, but I still worry that she's not getting enough nutrition.My 18 month old is starting to fall into her sister's footsteps. As far as protein goes, she lives off of hot dogs, chicken nuggets, and fish sticks. She used to eat a wide variety of things like eggs, broccoli, peas, beans...now she won't have any of it.A few nights a week I have to make 2-3 different meals so that everyone is satisfied, but I feel so guilty because they're not eating anything good for them, and it takes up the very small, precious amount of time I get with them after work. Help! via /r/Parenting http://ift.tt/2g6GHRM