Nordic Ware https://www.amazon.co.uk/dp/3030146057/ref=nosim?tag=tosheroon-21

Achieve professional results in your own kitchen with the Nordic Ware 365 Meatball Griller. Designed to take the guesswork out of meal prep, this specialized grill tray uses a unique concave design to hold your meatballs in place. This ensures every piece stays round and identical, giving you restaurant-style presentation every time you cook for your family or guests. Built for versatility, this tray works perfectly for both indoor oven use and outdoor grilling. The durable aluminum construction provides even browning, so your meatballs cook consistently from edge to edge. Cleanup is simple thanks to the integrated nonstick coating, which allows food to release easily without sticking to the pan. Whether you are preparing a quick weeknight dinner or hosting a large gathering, this American-made tool helps you create uniform, delicious meatballs with minimal effort.