As the apples cook, they will break down into mush (like making applesauce). If you slice them thin, they only need 5 -10 minutes total to cook through, but will still have a little structure to them.The apples usually release liquid while cooking. If there is not enough liquid after dissolving the sugar into the cooking apples, you can add a little water to make more sauce. It will thicken with the flour.I used a full lemon over the apples as I was slicing them. Mostly, this helps to prevent browning on the apples, but it also adds another level of flavor and tartness to offset the sweet sugar.You can also/alternately use maple syrup, honey, and/or brown sugar to sweeten the apples.