Preheat oven to 425°. Bring down to 375°.
For the crust, combine dry ingredients.
Combine oil and milk; then add to dry ingredients, stirring with a fork.
Save back about 1/4 of dough for topping.
Press the rest of the crust into a baking dish. Press up the sides until crust is high enough to hold the filling.
Once thawed, you can chop the cherries if you wish or leave them whole.
Combine cherries with sugar, salt, corn starch, and cinnamon. Mix well.
Pour cherry mixture into crust, and top with sliced butter.
Finally, crumble your crust topping over the cherry mixture.
Bake for 40 minutes to 1 hour, until crust and topping are a nice golden brown.
Serve with a scoop of vanilla ice cream and enjoy!