Cauliflower Pizza Crust with Sausage and Basil

Name: Cauliflower Pizza Crust with Sausage and Basil
Ingredients: One 2-pound head cauliflower; 1 tablespoon extra-virgin olive oil; Kosher salt and freshly ground black pepper; Cooking spray, for the pan; 1 large egg, beaten; 1/3 cup crumbled goat cheese (about 2 ounces), at room temperature; 1/2 teaspoon dried oregano; 1/2 teaspoon turmeric; 1/2 to 3/4 cup marinara sauce; 1 link Italian sausage (about 3 ounces), casing removed, cooked and crumbled; 1/2 cup shredded mozzarella; Basil leaves, for garnish