In a mixing bowl, whisk together the cake ingredients.
Pour into a greased bundt cake pan.
Bake at 350°F / 175°C for 35 minutes.
While the cake bakes, melt the butter in a pot over medium heat.
Whisk in your sugar substitute, vanilla, cinnamon, nutmeg, allspice, apple cider vinegar and maple syrup..
Bring to a simmer, stirring occasionally so the sugar sub doesn't burn.
Keep it simmering until it begins to thicken up. Should take around 3-5 minutes.
Once it's thickened, take off heat and let it sit until the cake is done.
When the cake is done, use a skewer or end of a utensil to poke several small holes into the top (technically the bottom) of the bundt cake.
Pour the butter mixture around the cake, making sure the holes are filled with the butter. Keep swirling the pan around until your mixture has dissolved into the cake.
Set aside and let it cool for 1 hour.
When you’re ready to serve, place a plate on top of the bundt pan and flip it around so the cake pops right out!
