We do not use refined sugar in our home so I am always looking for a good base recipe that I can tweek. This one turned out pretty good! Instead of sugar I used 1/4 cup of Organic Agave Nectar & 1 1/2 tsp's of liquid Stevia (I like the NOW brand). Instead of the egg whites I just used 2 more whole eggs. I added 1/2 tsp of Pumpkin Pie Spice along with the other spices (we like spices). Also, mixed in 1/2 cup of diced walnuts & then sprinkled some extra on top before putting in the oven. (Used a different pie crust recipe).