Mix the frozen Tortelloni Ricotta e Spinaci with the cold sauce, the raw broccoli florets and the pre-fried golden brown chicken cubes. Season to taste with salt and pepper. Place everything in an oven dish, cover generously with grated cheese and heat/au gratin at 180° C for 20 to 25 minutes (adjust cooking times and/or GN size for large quantities, so that the gratin is perfectly prepared). Arrange the gratin on plates or put the oven dish on a plate.