Chia, date and walnut fridge cake

1 Line a 20cm diameter cake tin with clingfilm and set aside. Put the oats, walnuts, coconut, chia seeds, cinnamon, cocoa powder and vanilla extract in a food processor, then whiz to a powder.

2 With the motor running, add the dates, a few pieces at a time. Continue to process until the mixture starts to come together.

3 With clean hands, bring the mixture together completely (add 1–2 teaspoon cold water if it’s still a little crumbly), then press it evenly into the tin. Smooth the surface by pressing down firmly with the back of a spoon, then cover and chill for at least 30 min or until firm.

4 Dust the cake with icing sugar, then lift out of the tin and cut into 16 slices. The cake will keep, covered in the fridge, for up to 2 weeks.