• Preheat your oven to 180℃ (160℃ for fan ovens) and line an 8x10-inch baking tin.
• In a large bowl, cream together the butter and sugar then stir in the vanilla extract. An electric hand whisk is handy for this.
• Mix in the eggs, flour and milk, a little bit at a time, until you have a smooth cake batter.
• Transfer the batter to your lined tin and spread it out evenly. Bake for 25-30 minutes, until a toothpick comes out clean.
• Let the cake cool in the tin for around 10 minutes then flip it out onto a wire rack and leave to cool completely.

Icing and sprinkles

• Mix the icing sugar and milk together to make a smooth, thick icing. To make it thinner, add more milk, or add more icing sugar to make it thicker.
• Spread the icing on top of the cake then sprinkle over the hundreds and thousands.
• Leave the icing to harden then cut into slices and enjoy!