Grease the bottom and sides of a 20cm round cake tin. Line the base with baking paper.
Preheat oven to 160 degrees celsius (fan-forced).
Beat the butter, caster sugar and vanilla extract until smooth and creamy. If using a Thermomix: Cream butter, sugar and vanilla extract together for 30 seconds, Speed 4. Scrape down the sides of the bowl.
Add the eggs and milk and beat until combined. If using a Thermomix: Add the eggs and milk and beat for a further 20 seconds, Speed 3.
Sift in the self-raising flour, add the cinnamon and salt and beat until just combined. If using a Thermomix: Add the self-raising flour, cinnamon and salt and combine for 20 seconds, Speed 4.
Pour the mixture into the prepared tin.
Bake in the oven for 30-35 minutes or until the cake is cooked when tested with a skewer.
To make the topping, mix the cinnamon and caster sugar together. While the cake is still warm, brush the melted butter over the top. Sprinkle with the cinnamon sugar.
Notes
RECIPE NOTES & TIPS
Best served slightly warm with a drizzle of cream.
If you don't have self-raising flour you can use all-purpose flour. Just sift two teaspoons of baking powder to every 1 cup of plain flour before adding it to the batter.
Insert a skewer in the middle of the cake to make sure it is cooked through. If the batter sticks to the skewer, bake for a little longer.
Add a sheet of foil loosely over the top if the cake is over-browning.
Store leftovers in an airtight container for up to 3 days at room temperature.
Freeze for up to 3 months.
Use gluten-free flour if you want to make this cake gluten-free.
For a dairy-free version of this recipe, use non-dairy milk and butter.