You can use applesauce in place of milk. I and my son have very severe allergies to lactose. Use oleo/margarine rather then real butter and you will be fine (as there is very very little lactose in it) and eggs do not contain lactose at all. So unless they have allergies to eggs or are vegan.. eggs are okay. When I was in the hospital for surgery, the dietician said that the use of oleo/margarine for cooking was okay.. because you do not really use much to start with and it only has a very small % in it to start with.