Step 1Make the meatballs. Mix mince, onion, mustard, egg, breadcrumbs and some seasoning in a bowl. Shape into 16 balls, put on a plate or baking tray, cover and chill until needed.
Step 2For the sauce, heat oil in a small frying pan over medium-low heat and cook onion for 10min until softened, adding garlic for the final 2min. Scrape into the bowl of the slow cooker.
Step 3In a small bowl mix the cornflour with 1tbsp stock to form a smooth paste, then whisk back into the remaining stock. Add to the slow cooker then stir in the other sauce ingredients and plenty of seasoning.
Step 4Add meatballs to the slow cooker (don’t worry if they’re not all submerged in the sauce), cover with the lid and cook on low for 6hr.
Step 5 Serve the meatballs and sauce topped with basil and Parmesan, if using, with spaghetti and/or greens on the side.
A crack team of highly skilled food content producers, the GH Kitchen Team are Good Housekeeping’s resident recipe developers and all-round food obsessives. GH Kitchen Director Sarah Akhurstis our resident hosting pro and loves nothing more than putting on a foodie feast for friends. Senior Cookery Writer Alice Shields is a former pastry chef and baking fanatic who loves making bread and would have peanut butter with everything if she could. Lover of all things savoury, Senior Cookery Writer Grace Evans can be found eating nocellara olives at every opportunity, and will take the cheeseboard over dessert any time. With a wealth of professional kitchen experience between them, they’re dedicated to ensuring every Good Housekeeping recipe is the best it can be, so you can trust they’ll work every single time.
