Italian Sausage and Chorizo Pasta

• 350g/12.5 ounces rigatoni
• 2 tbsp olive oil
• 200g/7 ounces spicy smoky spanish chorizo, finely chopped, no casings
• 1 small onion, finely chopped
• 5 garlic cloves, minced
• 350g/12.5 ounces spicy Italian sausage, no casings
• 2 tbsp tomato paste
• 2/3 cup/150 ml chicken broth
• 2 ½ cups/600 ml crushed tomatoes
• 30g/1 ounce grated Parmesan
• 2 tbsp chopped parsley
• crushed red pepper flakes, for serving (optional)

Spices​

• 1 tsp...