Preheat oven to 350, line baking dish with parchment paper
In a large bowl, add almond flour, rolled oats, baking soda, cinnamon, and salt, then using a fork, break apart the cold butter into the dry ingredients. Mix together using your fingers to break down the butter as much as possible into the mixture, then place in fridge while you make the pie filling.
Using a small-medium sized saucepan over med-high heat, bring to boil a 10-12oz bag of frozen cherries with lemon juice and lemon zest. Once boiling for roughly 3 minutes, turn the heat to low and allow to simmer for 20-30 minutes. Add arrowroot powder and using a potato masher, mash cherries down into preferred consistency. Set aside.
In a small bowl, mix the remaining wet ingredients (egg, maple syrup, vanilla extract, almond extract) and then remove the dry, butter mixture from fridge.
Whisk the wet ingredients into to the large bowl, mixing together until you get a crumbly texture.
Take ⅔ of dough mixture and place into lined baking dish. Spread evenly, pressing firmly into pan. Then, spread cherry filling over the dish evenly. Take the remainder of the dough and crumble on top of cherry filling. Sprinkle top with rolled oats.
Bake in oven for 30-40 minutes and allow to cool. While oatmeal bars are cooling, make the glaze drizzle if you'd like by mixing together powdered monk fruit sweetener and fresh lemon juice. Using a spoon or fork, evenly drizzle on bars, slice and enjoy!