Vanilla Birthday Cake 😍 This is one of the most delicious birthday-style sprinkle cakes I've made. I hope you enjoy it too! Get ready to sprinkle Sound on for full instructions 🔉 All you need is: For the cake: 280g plain flour 1 tsp baking powder 1/2 tsp bicarbonate of soda 1/2 tsp salt 160g margarine or butter, softened 285g caster sugar 3 large eggs, room temp 2 tsp vanilla extract 210ml milk, room temp 70g rainbow sprinkles For the buttercream icing: 120g unsalted butter, softened 240g icin