Funfetti Sheet Cake

Instructions

For the Cake

1. Preheat the oven to 170C/325F/Gas 3. Grease a 13x9-inch pan, and set aside.
2. Whisk together the flour, baking powder, baking soda, and salt. Set aside.
3. Whisk together the eggs. Add the sugar, and whisk until combined. Add the vanilla extract, butter, and yogurt, and whisk until combined. Gradually fold in the dry ingredients. Gently fold in the sprinkles.
4. Pour the batter into the prepared pan, and spread out evenly. Bake for 20 - 25 minutes, or until a toothpick inserted into the centre comes out clean. Allow to cool completely in the pan on a wire rack.

For the Frosting

1. Using a handheld or stand mixer fitted with the paddle attachment, beat the butter on high until pale and creamy - about 5 - 10 minutes.
2. Add half of the icing sugar and, starting on low speed and working up to high, beat until light and smooth. Add the remaining icing sugar, and beat, starting on low, until smooth and combined.
3. Add the milk, and vanilla, and beat until light and fluffy. Add a pinch of salt if the frosting is too sweet.
4. Spread the frosting evenly over the cooled cake, and garnish with sprinkles. Slice and serve!