Start by pre-heating your oven to 180c/350f. Also grease and line two 8 inch cake tins. Leave these aside.

In a large bowl, add the flour, pumpkin pie spice, baking powder, baking soda and salt. Whisk these together.

In a separate bowl, add the pumpkin puree, brown sugar, oil, eggs, vanilla and coffee/water mixture. Whisk until combined.

Pour this wet mixture into the flour mixture, then whisk just until you get a smooth batter.

Pour this into your prepared cake tins, then bake at 180c/350f for around 40-45 minutes, or until a toothpick inserted into the centre comes out clean.

Whiles the cake layers are baking, get the milk ready.

In a pot, add all the ingredients for the milk mixture. Place this onto medium heat.

Heat this just until all the coffee has dissolved and the mixture starts to simmer. Take this off the heat.

Because of the pumpkin pie spice, this mixture will have some lumps or grains of the powder in this, you want to get rid of this. You can either do this using a very fine mesh sieve, or a muslin cloth, or maybe even a coffee filter (I've never used a coffee filter before so I might be wrong).

Once the cakes have baked, and they are still hot, poke some holes into them using a knife or a skewer.

Now pour the milk mixture over them. Leave these aside for a few hours, to soak the milk and cool completely.

In a large bowl, add the softened butter, half of the icing sugar and the vanilla. Mix these until combined.

Add the rest of the icing sugar, mix until combined again, then beat this mixture for 5 minutes.

After 5 minutes, add the cream cheese into this and mix until you get a smooth, thick frosting.

Once the cake layers have soaked up the milk and have cooled completely, you can fill and decorate it.

Place one of the layers down onto a cake board or plate, spread some cream cheese frosting over this, then add the 2nd layer of cake on top.

Now you can decorate it however you want, I just covered it with the frosting, added a swirl on top, then covered the sides of the cake with some chopped walnuts.

After decorating, it is done. Cut into it and enjoy!