Preheat oven to 375 degrees.
In a medium bowl, combine flour, oats and Splenda Brown Sugar, cinnamon.
Add egg whites and mix until the mixture comes together. Set aside.
Cut apples in half and use a spoon to scoop out the seeds and stems.
Combine Splenda Brown Sugar and cinnamon.
Place apples in a baking dish and sprinkle on brown sugar/cinnamon mixture.
Pile the crumble filling onto each apple.
Cover the baked dish with aluminum foil.
Baked for 20 minutes.
Remove the foil and bake for 20-25 minutes or until the crumble is just starting to brown.