Italian Beef Tortellini Stew

Ingredients (16)

• 1/3 cup all-purpose flour
• 1 teaspoon pepper, divided
• 1 pound beef stew meat, cut into 1-inch cubes
• 3 tablespoons olive oil, divided
• 2 medium zucchini, cut into 1/2-inch pieces
• 1 large onion, chopped
• 2 celery ribs, sliced
• 3 small carrots, sliced
• 3 garlic cloves, minced
• 1-1/2 teaspoons each dried oregano, basil and marjoram
• 1/2 cup dry red wine or reduced-sodium beef broth
• 1 can (28 ounces) crushed tomatoes
• 3 cups reduced-sodium beef broth
• 1 teaspoon sugar
• 1 package (9 ounces) refrigerated cheese tortellini
• 1 package (6 ounces) fresh baby spinach