Wikijunior:Raspberry Pi/Raspberry Pi Zero Traybake Cakes recipe

Raspberry Pi Zero edible paper template

To celebrate the birthday of the Raspberry Pi in 2018?, we had Raspberry Pi Zero tray cakes.

You can make these cakes yourself, providing you have a printer that can print edible icing paper with edible ink. If you don't have a printer, perhaps you can find someone who can print the template out for you.

Depending on your preference, you can make a traditional Victoria sponge cake or a lighter blow-away cake.

Preparing the Raspberry Pi Zero cake toppers

1. Print the Raspberry Pi Zero edible paper template onto an A4 sheet of edible rice paper.
2. Cut the Raspberry Pi Zeros out individually using a pair of scissors, a knife or a paper guillotine.
3. Set aside for later when you are icing the cakes. Each Raspberry Pi Zero is 65 mm by 30mm.

Make a blow-away cake

Blow-away cake (angel food cake) is a light sponge that is low in fat. This is because of the air that is introduced into the mixture as it is whisked.

Ingredients

Image	Amount	Ingredient
	113 g (½ cup or 4 oz)	self-raising flour (or plain flour with 1 tsp bicarbonate of soda)
	113 g (½ cup or 4 oz)	caster sugar (also called superfine sugar)
	4	eggs

Equipment

• ×1 mixing bowl
• ×1 wooden spoon
• ×1 electric whisk (or a hand whisk)
• ×1 metal cuboid tray (such as lasagna tray)
• ×1 cooling rack

Method

1. Preheat the oven to 200°C (375°F or Gas Mark 5).
2. Crack the eggs, separate the yolks and then add the whites to the mixing bowl.
3. Whisk the egg whites and then add the yolks, one at a time and beat them in too.
4. Sift the flour and then add the sugar slowly, keep beating until a mixture is formed.
5. Grease the cake tray then pour the batter into it. Cook for 20 minutes or until golden brown.
6. Cut the cakes into equal pieces about the same size as the Raspberry Pi Zero (6.5cm by 3cm (or about 2.5in by 1in.))
7. Remove the cake from the trays and cool on the cooling rack.

Make a Victoria sponge

This is a traditional Victoria sponge recipe which has a denser texture.

There is an alternative Victoria sponge recipe in the Wikibooks cookbook.

Ingredients

Image	Amount	Ingredient
	113 g (½ cup or 4 oz)	self-raising flour (or plain flour with 1 tsp bicarbonate of soda)
	113 g (½ cup or 4 oz)	caster sugar (also called superfine sugar) or brown sugar
	113 g (½ cup or 4 oz)	unsalted butter or margarine
	2	eggs

Equipment

• ×1 mixing bowl
• ×1 wooden spoon
• ×1 metal cuboid tray (such as a lasagna tray)
• ×1 cooling rack

Method

1. Preheat the oven to 160°C (335°F or Gas Mark 3) (or use the top-left oven in the AGA®).
2. Cream the margarine and sugar together into a mixing bowl with a wooden spoon until the mixture is light and fluffy.
3. Break in the eggs one at a time and beat well.
4. Add the flour and stir until the mixture is thick.
5. Grease the cake trays with some margarine.
6. Place mixture evenly into both cake tray and cook in oven for 30 minutes.
7. Leave the cake to cool in the tray for 2 minutes before transferring to cooling rack.

Make the butter icing

Ingredients

Image	Amount	Ingredient
	113 g (½ cup or 4 oz)	icing sugar (also called powdered sugar)
	113 g (½ cup or 4 oz)	unsalted butter
	1 teaspoon (tsp)	green food colouring

Method

1. Make the cake's icing by mixing the icing sugar, butter and green food colouring.
2. Spread the icing on the cake and then apply a Raspberry Pi Zero edible paper decoration on top.