In a large mixing bowl, start by combining the mince, egg, finely diced onion, 1 clove of minced garlic, 50g of the mozzarella and season with salt and pepper.
Coat the base of a non-stick frying pan with rapeseed oil and roll the meatball mix into around 15 meatballs, placing them into the pan as you go (off the heat).
When all of the meatballs are added to the pan and evenly distributed, turn on the heat to medium/high. Leave the meatballs for 5 minutes to brown (without stirring) and then rotate and repeat for another 5 minutes.
Remove the meatballs from the pan and set aside. Add the remaining minced garlic into the same pan to gently fry before adding the passata, chicken stock cube, oregano and honey. Season with a pinch of salt and stir to combine.
Pop the whole grain spaghetti into salted boiling water and set your timer to 2 minutes minus the packet time. At this stage, also add the meatballs back into the pan with the marinara sauce.
Transfer the spaghetti into the sauce along with the courgettie and around 2 ladles of pasta water. Stir to combine and continue to cook until perfectly al dente.