Preheat oven to 375 degrees F. Butter an 8x8 inch baking pan.
Peel and slice peaches. Layer in prepared pan.
In a medium bowl, stir flour, white sugar, brown sugar, salt and cinnamon together.
Cut in butter using a pastry cutter or 2 forks until mixture resembles coarse crumbs.
Evenly sprinkle over peaches. Bake for 45-50 minutes or until golden brown.
