Giant cookie cake

• unsalted butter↗175g g

  softened

• light soft brown sugar↗200g g
• egg↗1

  plus 1 yolk

• vanilla extract↗2 tsp tsp
• self-raising flour↗250g g
• cornflour↗2 tsp tsp
• baking powder↗2 tsp tsp
• milk chocolate chips↗100g g
• white chocolate chips↗50g g
• vanilla ice cream

  to serve

Step-by-step instructions

1. 1

   Heat oven to 200C/180C fan/gas 6 and grease a 22cm springform cake tin. Beat the butter and sugar in a large bowl until pale and fluffy, then mix in the egg, extra yolk and vanilla extract.

2. 2

   Combine the flour, cornflour and baking powder, then fold into the butter mixture until fully incorporated – it will be quite thick. Add the chocolate chips and mix until evenly distributed.

3. 3

   Spoon the mixture into the prepared tin and bake for 20-25 mins or until light golden brown. Leave to cool for 5 mins. Serve warm with vanilla ice cream.