Beet Greens Pesto Pizza

Ingredients

• 1 large flatbread, or pizza base.
• 2 cups baby spinach leaves, roughly chopped.
• 1 small red onion, finely sliced.
• 2 small beetroot bulbs, diced into 2cm chunks, reserve leaves for later.
• 1/2 cup Brussels sprouts, chopped into quarters.
• 100 g mozzarella cheese, grated.
• 1/2 cup basil, fresh, leaves picked, reserve stems for later.
• Leaves from 2 small beetroot bulbs.
• Leftover stems from basil, chopped.
• 50 g parmesan cheese.
• 2 cloves garlic, roughly chopped.
• 1/2 cup walnuts.
• 1/4 teaspoon sea salt.
• 1/4 teaspoon freshly ground black pepper.
• 1/4 cup extra virgin olive oil.