1. Fire up your Ooni pizza oven.
2. Add a little olive oil your Sizzler and place inside the oven to warm up.
3. Once the pan is warm, add the bacon and garlic to the pan and return to the oven.
4. Add the Brussels sprouts and chilli flakes to the pan and toss through the rendered bacon fat.
5. Remove the pan from the oven, drizzle over the maple syrup, mix through the cooked bacon and thyme, and season to taste with sea salt.