Lemon & orange cake - Good Food Middle East

Ingredients

• 250g pack butter, softened
• 250g golden caster sugar
• 4 eggs
• 250g gluten-free self-raising flour (we used Doves Farm, which is also wheat-free)
• 2 tsp gluten-free baking powder
• 250g mashed potatoes, forked through so it doesn't go in as one lump
• 2 lemons, zest and juice
• 1 orange, zest and juice
• 175g icing sugar
• squeeze lemon juice (save a little from the cake quantity)
• chocolate eggs, to decorate, if you like (check they're gluten-free)