My daughter refuses to eat dinner; she waits until breakfast. HELP!?

My 3 year old has always been a picky eater, however, recently, she refuses to eat dinner (I only put about 1 small bite of everything on her plate). When I tell her to take a bite, she does, but she holds that bite in her mouth for the entire dinner period (up to a hour). She will not swallow it, or drink or anything. I have tried to put her drink for last, I have tried putting dessert for last, I have tried to offer sauces - nothing works. It seems that she waits for breakfast as we have pancakes, or hot cereal or corn flakes with fruit, etc. She take a multivitamin, but I don't know what else to do about dinnertime?!?! Oh, she does the same thing at lunchtime as well. Unless it is turkey burgers w/ fries or nachos, which we rarely have. I have to feed the other family members healthy meals so I don't want to cater to her menu selection. Do you have any suggestions?