Rhubarb Squares

This recipe came from a fellow CSA Member of "Cooper's CSA Farm & Maze" and it is nothing short of excellent!  My family absolutely loves this treat and eagerly look forward to the springtime when we receive fresh rhubarb in our CSA boxes!!!

RHUBARB SQUARES

Ingredients:

Filling:
3 cups rhubarb, chopped in 1/2" cubes
1 1/2 cups of white sugar
2 tbsp cornstarch
1 tsp vanilla extract
Crust:
1 1/2 cups rolled oats
1 1/2 cups all-purpose flour
1/2 tsp baking soda
1/2 tsp baking powder
1/2 tsp ground cinnamon (optional)
1/4 tsp salt
1 cup brown sugar
1 cup butter or margarine, cold and cut into 1/2" cubes

• Preheat oven to 350F.
• Combine filling ingredients in a large saucepan over medium heat, and cook until thickened.  Set aside.
• Combine the first 6 crust ingredients in a mixer and mix well.  Add butter and process until mixture is crumbly.
• Pat 2/3 of the crust into a greased 8"x12" pan.  Add filling.  Sprinkle the remaining crumbs evenly over the top.
• Bake for 30 to 35 minutes.
• Cool and keep in refrigerator until ready to enjoy!