I always add batting, we live in a cold climate and it helps hold the Minky in place for quilting. But, I know many people who choose to not use batting when backing their quilts with Minky or any other type of fleece. It is up to you- there is no right/wrong, it’s a personal choice. Just remember to smooth the backing, don’t stretch it. Minky is a favorite backing for my family, I use it a lot- love the soft cuddly quilts backed with it.