Pre-heat your oven to 160C Fan/180C/350F/Gas Mark 4 and grease two 6-hole donut tins with butter or a baking spread (or one 12-hole donut tin)
In a mixing bowl, combine the vegetable oil and Biscoff spread with a hand whisk. Then add the milk, eggs, vanilla extract and light brown soft sugar, and whisk in well
Add the self raising flour and whisk in gently
Divide the batter between the trays. 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
To decorate, set the donuts onto a cooling rack with a baking tray or some baking paper underneath to catch any drips
Warm the Biscoff for 20-30 seconds in the microwave unti it has a pouring consistency
Dip the top and, more rounder half of the donuts in the melted Biscoff and place back on the rack
Melt the white chocolate in the microwave, start with a 30 second blast, stir, then do 10 second blasts stirring in between each one until it's fully melted
Put the melted white chocolate into a piping bag, snip a little bit off the end using scissors and drizzle the white chocolate over the donuts. Or drizzle on with a spoon
Top each donut with a Biscoff biscuit - the biscuits will go soft after being in contact with the donuts for a while so add them as close to serving as you can
Then leave the donuts to set - or dig straight in!
Store leftover in an airtight container and eat within 3 days