Put the sugar and eggs into a large bowl, then beat using an electric hand whisk until thick, pale and foamy, about 2 mins. Spoon the beetroot mix into the bowl (it won’t look too pretty at this stage, but bear with me), then use a large metal spoon to fold it into the whisked eggs. Try to conserve as much air in the mixture as you can. Sift in the flour and cocoa powder, then gently fold these in to make a smooth batter.
Healthy chocolate brownies
Heat the oven to 190C/170C fan/gas 5 and line a shallow 23cm square baking tin with baking parchment. Tip the beans, cocoa, coffee granules, xylitol, vanilla, eggs and yogurt into a large bowl. Blitz using a hand blender until smooth. Or, do this in a food processor. Add the baking powder, then blitz again.