Kirstie Allsopp’s Union Jack celebration cake

(34 ratings)
Kirstie?s Royal Wedding celebration cake
Kirstie?s Royal Wedding celebration cake
  • Serves: 12

  • Prep time:

  • Cooking time:

  • Total time:

  • Skill level: Easy peasy

  • Costs: Cheap as chips

Celebrate all things British with this gorgeous berry-topped cake, filled with strawberry jam and spread with a rich butter cream icing. Perfect for picnics, street parties or to brighten up a rainy day!


  • 200g (7oz) plain flour
  • 405g can light condensed milk
  • 2 eggs
  • 2tsp vanilla extract
  • 150g (5½oz) margarine or butter
  • 3tsp baking powder


  • 6tbsp strawberry conserve or jam


  • 200g (7oz) icing sugar
  • 100g (3½oz) margarine or butter, softened
  • 2tsp vanilla extract
  • 200g (7oz) mixed summer berries, to decorate

You will also need:

  • 2 x 18cm (7in) sandwich cake tins, base lined with parchment

Look out for natural vanilla extract – not essence. It is widely available in all good supermarkets and makes all the difference to baking homemade treats!


  1. Preheat the oven to 180°C, 350°F, Gas Mark 4.
  2. Place the flour, condensed milk, egg, vanilla extract, margarine and baking powder in a bowl and beat with an electric hand mixer for 2-3 minutes until pale and fluffy.
  3. Spoon into the tins and bake for approximately 25-30 minutes until springy to the touch and golden brown. Cool slightly then transfer to a cooling rack to cool completely.
  4. Place one half of the cake onto a serving plate and spread with the jam. Sandwich together with the other half.
  5. Beat the icing sugar, butter and vanilla with a few drops of water to bring the mixture to a soft consistency. Spread onto the cake. Arrange the berries on top in a Union Jack shape if you like!

Your rating

Average rating

  • 3
(34 ratings)

Your comments


Love this cake, although I tweak it using low fat ingredients and loads of berries making it as healthy as possible. Also don't use jam but a fruit coulis instead and the family just love it. On very healthy gorgeous cake!

Curious Cook

The cake looks beautiful, but the recipe has failed me - have a volcano erupting uncooked batter in the tin! Should have stuck with a trad sponge and just taken the decoration :(


Gorgeous - LOVE Kirsty, how does she find the time to make cakes too though?

Charlotte Deputy Editor

Such an easy and effective way to turn a classic cake into something special. Perfect for St George's Day too.

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