Beetroot and Kale Burgers with Balsamic Red Onions | Veganuary

Ingredients

• 2 medium cooked beetroot
• 50g bulgur wheat, cooked according to package directions
• 50g red lentils, cooked along with the bulgur
• 50g hummus
• Zest of 1 lemon
• 1 tsp ground cumin
• 4 large kale leaves, quite finely chopped
• Sea salt and cracked black pepper, to taste
• Buns and garnishes of choice to serve
• 2 red onions, sliced into rings
• 2 tbsp balsamic vinegar
• 1/2 tsp fennel seeds