Peel and slice peaches. Pour in apple and lemon juice. Add flour, cinnamon, sugar, and mix
Combine butter, white and brown sugar, flour, cinnamon, salt, and mash everything until loose.
Preheat the oven to 375F, spray oil on a baking dish. Put the peaches with sauce, sprinkle the butter crumbs on top. Bake for 40 minutes. Serve hot or cold.