Preheat oven to 425 degrees F (220 degrees C).
In a medium bowl, cream together margarine, brown sugar and vanilla. Stir in oats, flour and water. Then press mixture into 9 inch pie pan. In a medium bowl, stir together the cherries and sugar. Pour into the crust.
Bake in preheated oven for 12 minutes, or until crust is golden brown.
You could double the recipe to make a lid for the pie.
Great with ice cream or yogurt
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