Bananas are her absolute favorite. I got the idea because I saw someone else give a horse a banana once. She nickers if she sees me with one and and she will lick her wall to savor the flavor when she finishes eating it for a good 10mins.
She also thinks Dumors grow out of her stomach because I do "carrot stretches" with them sometimes. After we're done, she'll keep checking underneath her chest and between her front legs to see if there are any more up in there. It's pretty amusing.
Berry Good Treats (alfalfa and berry combo), carrots, peppermints, and apples are my mare's definite favorites.
The other day I couldn't figure out why she was so pushy, as in I felt like a human treat ball she was pushing around, until I remembered the snack pack of carrots leftover from my lunch that I had tucked into my pocket for her.
Ted, I'm sorry to tell you that she does not like peeps, not even the peppermint ones. Maybe I raised her wrong?