Preheat your oven to 350 degrees, melt 1 stick of butter and let cool.
Cut your apples into long slices, toss with 1 tsp cinnamon and ½ cup brown sugar. Transfer the coated apples into a large cast iron pan.
In a mixing bowl whisk together flour, sugar, apple pie spice, and baking powder.
Add in your eggs, sourdough discard and melted butter, and mix until all combined.
Scoop the batter directly on top of your apples and gently spread evenly.
Bake at 350 degrees for 45 minutes.
Sprinkle with cinnamon sugar right when it comes out of the oven and let cool slightly, but this is definitely best served warm!
