Mixed Grain Vegetable Paella With Sausage and Castelvetrano Olives

This recipe for Mixed Grain Vegetable Paella with Sausage and Castelvetrano Olives includes a flavorful sofrito, herbed mixed grains, and a zesty rouille. It is heavy on vegetables like cauliflower, fennel, and peppers, making it a hearty and delicious plant-based dish.