Method

• Whisk flour with cocoa powder and salt in a medium bowl
• Microwave (or in a pot on a low heat element) chocolate in a small bowl until melted, about 1 min
• Stir in canola oil until smooth
• Whisk the eggs, sugar and vanilla in a large bowl
• Whisk in the chocolate mixture, then fold in flour mixture and 2 cups grated beetroot until just combined
• Scrape into a lined brownie baking pan
• Bake at 160° until a skewer inserted into the centre comes out just clean, 45 to 50 min
• Cool on a rack before cutting into squares