HELP!! Picky Eater

I have an almost 3 year old who will not eat veggies, loves berries, cheese, toast, chicken nuggets, sausage and bacon. She eats yogurts but eggs are hit or miss. I feel like I'm giving her the same things all the time just to get her to eat! Any suggestions for my picky eater? Healthy meals, filling meals, easy meals? She won't eat Mac n cheese and will only eat ground beef if it's tacos and even then it's hit or miss.