I met a woman while in line at JoAnn on Black Friday. She says that she uses flannel backing and NO interfacing OR
batting on her t-shirt quilts and they've been fine. She said that she does sashing and that holds the shirts stable. I am going to try her method and see how I like it. I have the lightweight interfacing from JoAnn but if I can save a step and still get the same results, I'm all for it.