Blueberry Bars

I love organic blueberry oat bars from Starbucks. This is the closest recipe I've found. It was gone in two days.

crust:
1 c flour
1/2 c old-fashioned oats
1/2 c brown sugar, packed
1/2 c (1 stick) chilled butter, cut into cubes

filling:
1 1/2 c fresh blueberries (or 6 oz. unthawed frozen berries)
1/2 c blackberry preserves
1/2 T flour

Preheat oven to 375 degrees. Line an 8 inch metal pan with foil and spray foil with cooking spray. I just sprayed the pan the first time I made these, and it was messy. Use the foil.

Pulse the flour, oats, sugar, salt and cinnamon together in food processor bowl. Add butter and pulse until you get a coarse meal. Transfer 1 cup to a medium bowl. This will be the topping.

Press the remaining crumb mixture evenly onto bottom of the pan. Bake until golden until it is just firm to the touch. It should take about 12 minutes. Let cool 10 minutes.

Mix filling ingredients in medium bowl. Spread evenly over crust in pan, then sprinkle saved topping over.

Bake for 30 minutes or until the filling bubbles and the top is golden.