Line a 9X9 inch brownie pan with parchment paper and preheat oven to 350F
In a large bowl mix together all of the dry pie dough crumble ingredients. Using your hands, mix together and make sure all of the shredded butter is coated with flour.
Add all of the wet ingredients together in a small bowl and whisk. After whisking, pour the wet mixture into dry bowl and stir. The mixture should be clumpy and feel like wet sand.
Scoop about 2/3rd's of the pie dough crumble into the prepared brown pan. Press mixture down using a spatula or bottom of measuring cup. Be sure to really press down on the corners and sides of the crust. This will help it be very sturdy.
In a bowl, toss together the apples, cinnamon, salt, sugar, and cornstarch. Place a pan over medium-high heat and drop in the butter. Once the butter is melted, toss in the apples and saute for 4 minutes until the apple is slightly softened.
Place pan in preheated over and bake for 50 minutes. When done, remove from oven and allow to fully cool. This is key or it will just fall apart. It needs time to congeal.. just like a pie! I let mine cool for 1 hour and then popped it in the freezer for 15 minutes. If you can leave it for a couple hours on the counter you should be good to go!
