Vanilla Cupcakes with Marshmallow Buttercream Frosting

These cupcakes I made as a trial run for some my mum has requested for her to take to work to celebrate her birthday.   A simple vanilla sponge cupcake base, with a marshmallow buttercream frosting swirled on top.  The frosting is much lighter and less sweet than traditional buttercream icing.

Ingredients:

Cupcake base:

  • 150g Caster Sugar
  • 150g Softened Butter
  • 150g Self Raising Flour
  • 3 Eggs
  • 3 tbps Milk
  • 1 1/2 tsp Vanilla Extract

Marshmallow Buttercream Frosting:

  • 200g Softened Butter
  • 400g Icing Sugar
  • 4 tbsp Milk
  • 2 tsp Vanilla Extract
  • 200g Marshmallows

Cupcakes:

Start by creaming the softened butter and caster sugar together until light and fluffy.

Mix in the eggs and flour, one egg at a time with a spoon of flour until all the eggs are mixed in.  Then add in the rest of the flour and mix to a smooth consistency.

Add the milk and vanilla extract and mix thoroughly until you get a soft dropping consistency.  Don’t worry if it looks slightly curdled.

Spoon into cake cases until 2 thirds full and bake at 180degrees until a clean skewer comes out clean when inserted.  For Fairy Cake size, this would be about 15-20 minutes, and should make about 20.  For Cupcake (muffin) sized, this would be about 20-25 minutes, and should make about 12-15.

Cool and then decorate as you want!

To make the Marshmallow Buttercream frosting:

Mix together the softened butter, icing sugar, vanilla and milk until the buttercream frosting is a smooth consistency.

Gently melt the marshmallows in the microwave in a glass bowl (important!) until they have just melted slightly and started to puff up.  They should not be too hot.  If you use a china bowl, the marshmallows will get too hot and will melt the buttercream too much.

Add the marshmallows to the buttercream frosting, and whip until completely combined.   The frosting should be thick and light.

Transfer the frosting into a piping bag with a large nozzle and pipe in swirls over the cooled cupcakes.

I have also decorated the ones in the photos with edible glitter and non-pareils.

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One Response to Vanilla Cupcakes with Marshmallow Buttercream Frosting

  1. Becky says:

    These are such lovely cupcakes! I made these with my daughter and they seriously are the best I’ve tried, beautifully light and fluffy. Thank you Sarah :o )

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