I'd start by involving her in food prep in the kitchen. Kids are a lot more likely to eat something they've helped prepare.
I know a lot of people say this, and I do think it is true, but at this age my experience is that it just does not work. A bit young to really do much "helping" and too young to make the connection that "I made that so let's try it" or "I made it so when I do try it I will do more than lick it once and spit it out..."
I have been going through this with my son for a couple of months now - have a post on our "journey" to getting him to eat, which I do need to update this week with some progress we have made.
http://babywhispererforums.com/index.php?topic=168087.0My advice would be to stop feeding her more toast when she won't eat. It's not helping her to expand her tastebuds and she has also learned that she does not need to try/eat/like anything else because there will always be toast. Make her three things for each meal - something she likes and will eat (so her toast, but limit how much) something she has not seen or tried before and something that she has tasted in the past and not liked. She may only eat the toast but encourage her to at least TRY the other things. I do a small but of encouraging but without putting too much pressure on my DS as that backfires. A lot! So I get him to touch it, squish it in his hands, feel it, touch it with his nose, kiss it and so on. And never ask him to put it in his mouth. The next meal or next day it might be the same thing but I try to get him to lick it, put it in and take it out of his mouth, and so on. If he generally does NOT like something that is fine, but there have been a few times that he puts something in his mouth and eats it and then two bites later when I offer him more he acts like it's something that is so disgusting he can not go near it

....soooo much is about control at this age!
It took me a long time to get my DH on my side but I started letting DH down from the table if he did not want what was on offer. So here is your dinner, including one thing you like (often tinned veggies as he will eat corn, peas and carrots...or would until he got sick of them recently!) and if you do not want it then off you go. Dinner is finished and there's nothing until tomorrow. If he TRIED things and generally did not like them I would offer him a small amount of something else (again usually bread or toast) but not much. And that was it. It took a good two weeks of not eating to get him to try things. But, he gets a good big breakfast and snack in the morning, lunch is so-so as I usually serve things he likes (toast, cheese, ham, veggies, fruit, crackers, etc) and so if he does not eat dinner he has still had something through the day.
After close to a month now, last night he very happily tried a piece of lettuce, a piece of purple lettuce (do not know the English name), and a kidney bean. Hated them all but very willingly tasted them - a MASSIVE improvement for us. He was willing to give a lick of his fork full of salmon as he knows he has to but he GLARED at me (it was hard not to laugh) as he leaned over to kiss it. Did not like it at all but was willing to do it a second time to get more cheese and a third time put it in his mouth and licked it a bit but still spit it out. And I was over the moon with that as it is HUGE progress in the past 3 months (18-21 months old).