Yellow Butter Cake – Thermomix

This is such an easy cake that slices well and keeps moist for ages. I used to love Duncan Hines or Betty Crocker yellow cake packet mixes. I haven’t seen them on the supermarket shelf for ages. This recipe is just as easy as preparing a packet mix and tastes so much better. The secret ingredient is custard powder. It gives the cake a lovely yellow colour. It only takes 30 seconds in your Thermomix and it’s ready for the oven! It is a great kids birthday party cake for decorating, as it can be shaped and will hold icing well. I like it with lemon icing for an afternoon tea treat.

butter cake

Yellow Butter Cake



  • 250 grams self-raising flour
  • 250 grams softened  butter
  • 2 teaspoons vanilla essence
  • 400 grams caster sugar
  • 4 eggs
  • 100 grams custard powder
  • 250 grams buttermilk*



  • Preheat a fan forced oven to 160C.
  • Place all ingredients in mixing bowl: 15 seconds/speed 5/measuring cup on.**
  • Scrape batter down from the sides and mix: 15 seconds/speed 5/measuring cup on.
  • Pour into a greased and lined on the bottom of a 23 cm deep square tin. Cook 1 hour.
  • Check cake with a skewer (it should come out clean). Bake for a further 5 to 10 minutes if required.


Note: * to make buttermilk add a tablespoon of vinegar or lemon juice to a cup of milk and let it stand for a minute.

** If you don’t own a Thermomix add all ingredients to a mixing bowl and beat with an electric  hand beater/stand mixer  until mixture is smooth.


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