Combine the flour, brown sugar, cocoa powder and baking powder, mixing well.
Transfer to an airtight container, jar or food-safe bag.
Label with the recipe name and date.
Add the remaining ingredients and baking instructions to the label: ½ cup milk, 75g melted butter, 2 eggs and 1 tsp vanilla. Bake at 180°C for approximately 30-35 minutes.
Store in a cool, dry pantry until ready to use.
To Make the Chocolate Cake
Preheat the oven to 180°C. Grease and line a cake tin.
Empty the prepared pantry mix into a large mixing bowl.
Add the milk, melted butter, eggs and vanilla.
Beat with an electric mixer until smooth and well combined.
Pour the batter into the prepared cake tin and smooth the top.
Bake for approximately 30-35 minutes, or until a skewer inserted into the centre comes out clean.
Allow the cake to cool completely before icing.
To Make the Chocolate Cream Cheese Buttercream
Add the softened butter and cream cheese to a bowl and beat together until smooth and creamy.
Add a little vanilla and beat again.
Gradually add icing sugar and cocoa powder until the buttercream reaches your preferred sweetness, chocolate flavour and spreading consistency.
Spread over the completely cooled chocolate cake.
Notes
The cake recipe can be doubled for a larger cake.
Baking time may need to be adjusted if you double the recipe or use a different-sized tin.
Store the prepared dry mix in an airtight container in a cool, dry pantry.
Once iced with cream cheese buttercream, keep the finished cake refrigerated.