To make the crust start with combining the flour, salt and sugar in a food processor
Add butter and pulse just enough to incorporate. About 10 pulses.
Slowly add water while processing just enough until the dough comes together.
Take out dough and split in two.
Flatten and wrap each piece in plastic and place in refrigerator for 1 hour.
Combine sliced plums and 1/2 of the cinnamon sugar in a bowl. Cover and let rest while the dough sets.
Roll out dough and place in a jelly roll pan.
Poke the dough a few times with a fork.
Spread cherry preserves all over dough.
Arrange plums
Sprinkle with remaining cinnamon sugar
Brush a little melted butter on the edges of the crust
Bake at 375 degrees for 50 minutes to an hour.
Remove from oven and let cool. Serve as is or with a little vanilla ice cream on the side.