Fresh Plum Crisp

Growing up in Romania, plums were always a HUGE thing in the fall.  We would buy tons of them to make jam so that we had it over the winter.  I absolutely love them!  This crisp is super easy and it is perfect for the fall season, when plums are in their glory.  I like to serve ours with some vanilla ice cream on top.  Enjoy!
-2 1/2 lbs plums, pitted and roughly chopped
-1 tsp cinnamon
-1 tsp lemon juice
-1 Tbs water
-1 cup rolled oats
-3/4 cup flour
-3/4 cup packed brown sugar
-1/2 cup margarine or butter, softened
Preheat oven to 375 F.
In a large bowl, mix the chopped plums with the cinnamon, lemon juice and water.  Mix well and pour into an ungreased 9x13 baking dish.
In your food processor, mix the oats, flour, sugar and margarine.  Sprinkle mixture on top of plums, as evenly as possible.
Bake in preheated oven for 35 minutes or until topping is golden brown.  Serve warm with some ice cream on top.  Enjoy!