Heat the avocado oil in a large pot over medium-low heat. Make sure it's large and wide, as this will help the sauce cook in less time.
Once hot, add in the garlic and onions. Stir for a few minutes, until the garlic is lightly browned and the onions are translucent. If the garlic is browning too fast but the onions are not softened, lower the heat.
Stir in the remaining ingredients (except the noodles). Turn the heat to high.
Cook the sauce, uncovered, for 20 minutes until the sauce is thickened. Continue to stir it occasionally as it cooks.
Once the sauce reaches the desired consistency, remove from the heat. Discard the bay leaf. Using an immersion blender, blend the sauce in pulses, within the pot, until it reaches the consistency you prefer (eg. a chunkier or creamier bolognese).
Transfer the noodles into 4 serving dishes. Top with even portions of the bolognese. Enjoy!