My son is allergic to apples. The same thing happened. We introduced him to rice cereal and all the veggies and he was fine. The first time I gave him the apples sauce, he broke out into a rash all over his cheeks, chest and diaper area. I didn't believe that it could be apples so after it cleared up we tried again (he wasn't uncomfortable, just looked bad) and the same thing happened. We talked to our Ped about it and it is not super common, but in the mean time he said to avoid it and hopefully he will outgrow it. He said to try again after he turns a year old (He's 9 months now). Since your daughter's reaction didn't seem to be painful, I would try 1 more time to make sure that it is the apples. Definitely discuss it at your next visit to the Ped so you can rule out anything else. Good Luck!