1 medium-size head cauliflower, cut into small florets  | 
                                                1 tablespoon olive oil  | 
                                                1/4 teaspoon freshly ground black pepper  | 
                                                1 1/4 teaspoons sea salt, divided  | 
                                                1 cup plain yellow or white cornmeal  | 
                                                2 teaspoons baking powder  | 
                                                1/2 teaspoon ground red pepper  | 
                                                1/2 teaspoon ground cumin  | 
                                                2 large eggs  | 
                                                1 (6-oz.) container fat-free plain greek yogurt  | 
                                                1 cup freshly grated cheddar cheese  | 
                                                4 green onions, sliced and divided  | 
                                                4 tablespoons vegetable oil  | 
                                                2 canned chipotle peppers in adobo sauce, finely chopped  | 
                                                1 cup crème fraîche or sour cream  |