My dd is 18 months old. Dh and I are not vegetarians, but dd mostly is, just by preference -- she doesn't seem to much like meat. Other than a resistance to eating meat, she's a VERY adventurous eater for a toddler, I think. Some of her favorites:
* Pizza. (We had pizza tonight. "Pizza" is her newest word
* Cheese (any kind, but especially string cheese).
* Pineapple - fresh, canned, or dried.
* Raisins (for a while, she lived on raisins and breastmilk)
* Crackers (any kind)
* Buttered bread (any kind; we usually feed her whole wheat. She prefers GOOD bread.)
* Egg rolls. (What we usually get her when eating at a Chinese restaurant.)
* Tortillas. (I got takeout from Chipotle's last night with my sister. For dd, I got a couple of their vegetarians soft-shell tacos.)
* Chili. (We make a chili with cut-up kielbasa, frozen corn, canned stewed tomatoes, and canned beans -- it's one of my I-don't-have-time-to-cook dishes. Dd ignores the keilbasa while devouring the kidney beans, black beans, and corn.)
* Scrambled eggs. (My standard lunch when we're out of leftovers is two eggs, scrambled in the pan, and toasted English muffins. Dd likes eggs so much I've decided I'm going up to three eggs because she'll happily eat a whole one on her own.)
* English muffins. (See above. She likes the "offin" part, too.)
* Sugar snap peas (steamed or raw)
Also, if it's some sort of ghastly junk food that no one in their right mind would feed to a toddler, she LOVES it. She has had the opportunity to sample chocolate, ice cream, jelly beans, and Cool Ranch Doritos, and of course she loves them all. *sigh*.
She's a remarkably good eater and will try a LOT of new things. Of course, she's also a totally unpredictable eater. She'll LOVE something one night (this is particularly true of vegetables) and refuse it two nights later. She'll also refuse things I know she'd LOVE if she tried them (like strawberries). I'd say that right now, her most reliably preferred food are the scrambled eggs; she will eat all I give her and nag me for more. She'll nag me for an "offin," too, but she's less likely to eat the whole thing.
I've been pleasantly surprised by some of the things she will willingly eat.