Step 1

Preheat oven to 400 degrees F. Coat an 8-inch-square baking dish with cooking spray.

Step 2

In a large bowl, combine blueberry pie filling, blueberries, and lemon zest; mix well. Spoon into prepared baking dish; set aside.

Step 3

In a medium bowl, combine oats, brown sugar, and flour; mix well. With a fork, blend in butter until crumbly; sprinkle over blueberries.

Step 4

Bake 30 to 35 minutes, or until golden and bubbly. Serve warm.