Cut your apples into slices, remove the seeds and the peel, and put them in a large bowl.
Add cinnamon, salt, sugar-free baking mix, and water to the apples. Mix them well.
Cover the bowl and let it sit overnight.
In the morning, remove the cover and add butter, vanilla extract, and egg to the bowl. Mix well.
Preheat oven to 350 degrees Fahrenheit.
Pour your mixture in a greased 9-inch pie pan and bake for 45 minutes.
Let it cool down completely and then serve.