Pre-heat oven to 350*F.
In a bowl, add your dry ingredients including; almond flour, coconut flour, arrowroot starch, powdered monkfruit/erythritol sweetener, xanthan gum, baking powder, baking soda, cinnamon and salt.
In another bowl, melt your butter in the microwave then add your eggs, heavy cream and vanilla extract.
Whisk well until smooth.
Add the wet ingredients to the dry ingredients and stir well until batter becomes thick.
Add your apple chunks and mix once more.
Line an 8x8 loaf pan with parchment paper (leave some over-hang so you can easily remove the loaf later).
Press half of the mixture evenly into the pan. Mix your cinnamon and truvia sweetener and sprinkle half of it over the batter.
Press the rest of the apple mixture evenly over the top of that layer and sprinkle with the rest of the cinnamon and truvia sweetener.
Bake for 28-35min or until the cake has started to brown on top and doesn't leave a dent when you gently press your finger down in the center.
Let the cake cool fully before removing it from the pan.
Prepare your glaze by whisking together the above 4 glaze ingredients in a small bowl until smooth.
Drizzle the glaze over the cake. Once it's set, you can slice and serve! Enjoy your Low Carb Keto Apple Cinnamon Cake!