Place apple slices in a large dutch oven, and toss with lemon juice. Add water Simmer on low for 1 hour and stir occasionally to avoid burning. Once apples break down, stir in brown sugar. I like to do this a bit at a time and taste test. Some apples are sweeter and need less than others. Finish with a pinch of salt and butter (optional) to balance the sweetness, stir and enjoy!