How to Make It
Let the dough stand, covered, at room temperature 1 hour.
Preheat oven to 450°.
Heat 2 tablespoons olive oil in a medium saucepan over medium heat. Stir in tomato paste and garlic; cook 1 minute. Add tomato and sugar; cook 10 minutes, stirring occasionally. Stir in basil and oregano. Keep warm.
Heat a large nonstick skillet over medium heat. Add 1 1/2 teaspoons oil to pan; swirl to coat. Add sausage, and cook 6 minutes or until browned, stirring to crumble. Place sausage in a bowl. Add remaining 1 1/2 teaspoons oil to pan. Add onion, bell pepper, black pepper, and salt to pan; cook 5 minutes. Add pepper mixture to sausage.
Line 2 baking sheets with parchment paper, and sprinkle with cornmeal. Divide dough into 8 equal portions. Roll each portion into a 6-inch round on a lightly floured surface. Top each round with about 2 tablespoons sauce, leaving a 1/2-inch border. Top rounds evenly with sausage mixture and cheese; fold dough over filling, and crimp edges with a fork to seal. Arrange calzones on prepared baking sheets; coat with cooking spray. Bake at 450° for 15 minutes. Bake an additional 10 minutes, or follow freezing instructions. Top each calzone with about 2 tablespoons sauce.
FREEZE: Wrap cooled, partially baked calzones individually in foil, and seal in a large zip-top plastic freezer bag. Freeze up to 2 months.
REHEAT: Bake calzones, unwrapped, at 400° for 20 minutes or until golden brown. Serve with warm lower-sodium marinara sauce.