Pre-heat your oven to 160C Fan/350F/Gas Mark 4 and grease two 6-hole donut tins with butter or baking spread
In a large mixing bowl, stir together the self raising flour, caster sugar and cocoa powder
In another mixing bowl or a jug, whisk together the milk, vegetable oil and eggs
Pour the milk mixture into the flour mixture, and whisk gently to combine into a batter
Divide the batter between the tins. You can put the batter into a piping bag or a jug to make it a bit neater to dispense into the trays, but you can do it with a spoon too
Bake them for 12 minutes, then remove them from the tin (I use a spoon to gently prise them out) and leave to cool on a cooling rack
Melt the dark chocolate and white chocolate in separate bowls. You can melt it in the microwave, make sure to use a microwave safe bowl. Heat the chocolate for 30 seconds, stir it, then heat in 10 second bursts, stirring in between
Set the donuts onto a rack with a baking tray underneath to catch any drips of chocolate
Dip the top half of the donuts in the dark chocolate and place back on the rack
Put the white chocolate in a small piping bag and cut a very small amount off the end, pipe three thin circles on the donuts on top of the dark chocolate, then use a cocktail stick to drag through the lines to create the spider web effect
Leave to set, or put them in the fridge to set the chocolate faster
Store leftover in an airtight container and eat within 3 days
Video
Notes
Make sure your ingredients, particularly the eggs, are at room temperature before you start baking.
You will need either a 12-hole donut pan, or two 6-hole donut pans to make this recipe.
You can use a different type of oil besides vegetable oil. I'd recommend one that doesn't have a strong flavour, canola and sunflower oil would both work well.
I topped the donuts with dark chocolate and a white chocolate 'spider web'. You could swap these around, or use milk chocolate instead of dark.
Although I provide cup measurements, I highly recommend weighing your ingredients out using digital kitchen scales. It is the most accurate way to measure ingredients and will ensure the best results. Digital scales are very low cost and can be purchased for around £12 ($16.50).
For teaspoon (tsp) and tablespoon (tbsp) measurements, please use measuring spoons and not the type of spoons you eat with. Again this will ensure accuracy and provide the best results.