Spinach, Caramelized Onion, and Bacon Pizza

Name: Spinach, Caramelized Onion, and Bacon Pizza
Prep time: 30 min
Cook time: 30 min
Total time: 1 h
Cuisine: European, Italian, Mediterranean
Ingredients: 1 cup bread flour, divided; 1 cup warm water (100 to 110 ); 1 teaspoon sugar; 2 1/4 teaspoons dry yeast; 1 3/4 cups all-purpose flour, divided; 1/2 teaspoon salt; cooking spray; 4 slices bacon, chopped; 1 (10 ounce) package fresh spinach; 2 cups sliced onions; 2 teaspoons sugar; 1 tablespoon butter; 2 garlic cloves, minced; 3 tablespoons all-purpose flour; 1/2 teaspoon fresh ground black pepper; 1 cup 2% low-fat milk; 1 tablespoon cornmeal; 1 cup grated fresh parmesan cheese