Gather the following ingredients: flour, baking powder, baking soda, sugar substitute, unsweetened applesauce, vanilla extract, and almond milk.
Preheat your oven to 350°F (175°C) and grease a Bundt cake pan. In a bowl, whisk together the flour, baking powder, and baking soda.
In a separate bowl, combine the sugar substitute, unsweetened applesauce, vanilla extract, and almond milk. Mix until smooth and well combined.
Slowly add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix to keep the cake light and fluffy.
Bake in the preheated oven for 30-35 minutes or until a toothpick inserted into the center comes out clean.
Allow the cake to cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.
If desired, prepare a light glaze using powdered sugar substitute and almond milk, and drizzle it over the cooled cake.
Slice and serve your delicious low-calorie Bundt cake with fresh berries or a dollop of Greek yogurt.