While Cherry Pie Filling is cooling. Preheat oven to 350°.
Place the flour, oats, confectioner's sugar, almonds, cardemon in a food processor and pulse for about 2 seconds...just to incorporate everything.
Add the cold cubed butter and pulse until everything is mixed, crumbly but holds together in your hands.
Butter or spray oil a 9"x13" glass pyrex pan.
Dump flour mixture into center of pan and spread out evenly. Mold mixture to sides and bottom until it is firm and packed.
Bake at 350° for 25-30 minutes. It is done when just turning golden brown on the bottom and edges are a little darker. Let cool until room temperature.
Note: You cook this longer than you would if you were adding a filling that needed to be cooked again in the crust.