Rainbow Cake Donuts

I just bought a mini donuts pan and was so excited to use it. I was talking to my friend on making Rainbow Cake Donuts and after seeing her bakes, I decided to bake too. It was indeed easy to whip up the batter (butter cake recipe), the only time consuming steps were to mix the various colors in separate bowls and pour into piping bags. The final step to pipe out the respective colors batter (as shown below).  An important thing to note: do not pipe the batter into the pan when is still hot as the batter will start to melt and the batter will not stay in position side by side.

Ingredients

250g  butter
165g sugar
4 large eggs
220g self-raising flour
1 tsp vanilla essence
Colourings

Directions

1. Whisk butter and sugar in a mixing bowl until well-combined.
2. Add eggs one at a time and mix well.
3. Add flour and vanilla essence and mix well.
4. Divide batter into 5 portions, add colouring to each respective batter and pour into piping bag.
5. Pipe out coloured batter accordingly into baking tray.
6. Bake at 180 deg C for about 10mins. Then, place donuts on a cooling rack.