Crab rigatoni

Ingredients

• Olive oil
• 2 large fennel bulbs
• 4 garlic cloves, finely sliced
• 1 bunch of flat-leaf parsley, stalks finely chopped
• 1 tsp dried chilli flakes
• ½ tsp ground cinnamon
• 1 tsp fennel seeds
• 2 lemons
• 2 x 400g tins chopped tomatoes
• 250g cherry tomatoes, on the vine
• 500g rigatoni
• 250g undressed brown crabmeat
• 250g white crabmeat