Heat your oven to 350 degrees.
Fill a medium size bowl half way with water. You will use this for the apple slices until you are ready to use them.
Peel the apples and then cut them in half. Cut the flesh off in thin slices. I don’t particularly like big chunky apple pieces and this works nice when layering. Cut the core out of course and throw the slices in the bowl of water as you go. For the record I used Braeburn apples. They are a sweeter variety and hold up well to cooking.
Add the dry ingredients to a bowl and mix lightly.
In a separate bowl mix together the eggs, oil and ½ cup juice and then add to the bowl of dry ingredients and mix until just incorporated
Strain the apples and discard the water. Add the melted butter and toss to coat. Make sure you do a thorough job here.
Add the cinnamon and 4 teaspoons sugar and again, toss to coat.
Spray a 9x11 pan with non stick spray (or coat with butter/flour).
Start layering. Add a thin layer of batter and then a layer of apple. Some people like to coat the bottom with the apple and add the batter on top. Continue until you end up with a layer of mostly batter on top. Please note that the batter will be thick so it won't spread and pour like you might expect. Just add clumps around, it will spread out as you go.
Bake for about an hour but start checking it at 50 minutes or so. When done, remove from the oven and let cool. Sprinkle with powdered sugar and serve.