Preheat your oven to 230°C/210°C(fan)/450°F/Gas 8. Line a large baking sheet with parchment paper.
Put all of the ingredients into a large mixing bowl.
Mix well to combine everything.
Roll the mixture into 16 meatballs and put onto the lines baking sheet. Drizzle with a little olive oil (optional).
Put into the preheated oven and cook for 20 minutes, turning halfway through.
Notes
If you want to make sure all the meatballs are an even size, so they all cook at the same rate. You could use an ice cream scoop to portion them out and then shape them into balls.
I always use slightly oiled hands to roll out my meatballs and it helps to stop the mixture sticking to my hands.
Don't forget to drizzle the meatballs with a little olive oil before they go in the oven. This will help them to get a little bit crispy.
You can make the meatballs ahead of time and then just keep them covered in the refrigerator until you are ready to make them. They might take a little longer if they go into the oven cold from the fridge.
Make this meal stretch a little bit further by making smaller meatballs and then mixing some white beans in with the spaghetti to bulk it out. They will cook quicker if they are smaller though.