***Do NOT thaw peaches***
Preheat the oven to 350.
Spray a 13 by 9 inch cake pan with Pam
Measure peaches and put them in a large mixing bowl. Let them sit on the counter and thaw for 10 minutes.
Then sprinkle with lemon juice and toss.
In another smaller bowl combine white sugar, salt, flour, and cinnamon.
Mix them together with a fork until they're evenly combined.
Pour dry mixture over the peaches and toss them (your hands are best).
Once most of the dry mixture is clinging to the peaches, dump them into the cake pan you've prepared. Sprinkle any dry mixture left in the bowl on the top of the peaches in the pan.
Melt the butter. Drizzle it over the peaches.
Then cover the cake pan tightly with foil.
Bake the peach mixture at 350 for 40 minutes.
Take it out of the oven and set it on a heat-proof surface, but DO NOT turn off the oven.