Preheat your oven to 350℉. Line a 9x9" baking dish with parchment paper, leaving some to overhang the sides so you can easily remove the bars later.
In a mixing bowl, whisk together the flour, one cup of oats, brown sugar, and baking powder. Then, add int he melted butter and extracts. Mix it all together until all of the flour has been absorbed and the mixture has a consistency similar to wet sand.
Add about two cups of the crust mix to your baking sheet (you'll have some left over). Spread it evenly and flatten it down with something like your spatula or the bottom of a glass, or just your hands.
Bake this bottom crust for about ten minutes. Remove from the oven and let it cool a bit, keeping the oven on for the next step.
While the crust is warm but not hot, spread the cherry pie mixture evenly over the top.
Add about 2 tbsp of oats to your remaining crust mixture in your bowl, and then sprinkle this over the top of your cherry pie filling.
Return to the oven and bake for 45 more minutes. The top should be lightly browned and the pie filling should be bubbling a bit around the edges.
Remove from the oven when done, and let cool on a wire rack for at least an hour. After that, you can move it to the fridge to cool faster if you prefer.