Roasted Cauliflower Sausage Bake

Name: Roasted Cauliflower Sausage Bake
Ingredients: 1 very large head cauliflower, cut into 6 1-inch slices (or two smaller heads); 1 pound sweet Italian sausage, crumbed and browned in EVOO; 1 pound hot Italian sausage, crumbed and browned in EVOO; 4 large red peppers, diced; 2 large Vidalia onions, diced; 4 tablespoons minced garlic; 1 pound thick sliced mozzarella; 1 cup crumbled feta; 2.5 cups Italian red sauce (see notes); 1 cup shredded asiago (or parmesan); 1-3 tablespoons fennel seeds; 1-3 tablespoons rosemary leaves; 1-3 tablespoons crushed black pepper