Step 1

Preheat oven to 350 degrees, and prepare a 9 x 13 baking dish by lining it with parchment paper. Set aside.

Step 2

In a large bowl or mixing bowl, cream together unsalted butter, granulated sugar, and vanilla for your cherry pie bar base.

Step 3

Once butter, sugar and vanilla are creamed together, sift in flour, baking powder, and salt, and mix until combined and smooth.

Step 4

Gently press the base into the prepared parchment lined baking dish, until it is evenly spread across the bottom.

Step 5

Pour the tart cherry pie filling over the base, and spread it out evenly. Set aside

Step 6

In a separate bowl, add all of the oatmeal crumble ingredients together, and use a fork to combine, mixing until just incorporated, but still lumpy, and crumbly.

Step 7

Scoop crumble over the top of the sour cherry pie filling, covering it evenly.

Step 8

Bake for 35-45 minutes, until lightly browned, and crust is cooked through.

Step 9

Remove from oven and let cool completely.

Step 10

Once cooled, whisk together powdered sugar, heavy cream (or milk), and vanilla extract, until combined, and at the desired consistency.

Step 11

Drizzle glaze over the cooled bars, and then refrigerate for about 10 minutes to let them set up.

Step 12

Slice into 16 bars, and serve. They will stay fresh 2-3 days outside of the fridge, a week if refrigerated, and 2-3 months if frozen.