In a large bowl whisk the almond flour, ground flax seed, baking powder, pumpkin spice, and sugar substitute.
Then, add the unsweetened apple sauce, melted unsalted butter, and eggs. Whisk everything together.
Spray only 6 spots of a muffin tray with the cooking spray and evenly add the batter to each one about 3/4 of the way with a spoon.
Bake for about 15-18 minutes or until the edges are golden and a toothpick comes out clean from the center.
CREAM CHEESE FROSTING
Place the cream cheese, unsalted butter, sugar substitute, and vanilla extract in a standing mixer. Let it all incorporate over medium speed. Scrape the sides down if needed and continue a few more seconds.