Ingredients

• 2 2/3 cups dried ziti or mostaccioli (8 ounces)
  
• 1 medium onion, thinly sliced
  
• 2 cloves garlic, minced
  
• 1 tablespoon olive oil
  
• 4 -6 medium tomatoes, seeded and coarsely chopped (3 cups)
  
• 1/2 teaspoon salt
  
• 1/4 teaspoon black pepper
  
• 1/8-1/4 teaspoon crushed red pepper (optional)
  
• 4 cups arugula and/or spinach, coarsely chopped
  
• 1/4 cup pine nuts or slivered almonds, toasted
  
• 1/4 cup crumbled Gorgonzola or Parmesan cheese