Preheat oven to 180C. Take your spaghetti squash and cut it lengthways in half. Pop it on a baking paper lined tray, seed side down, and bake for 30-45 mins until the you can push the outer skin and it gives a little under pressure like a ripe avocado. Remove from oven, turn over, scrape out seeds and set aside to cool.
The Topping is optional but delicious, so not really optional if you like delicious things. Mix the topping ingredients in a bowl together and spread evenly over the top of the meatloaf. Pop it in the oven and bake for 1hr 15. Remove from oven, slice & serve!