Heat oil in a large saucepan over medium-high heat. Add spring onion and cook for 2-3 minutes until softened. Add coriander and sugar. Cook for 1 minute. Stir in laksa paste and cook for 3 minutes. Add coconut milk, stock, and 3 cups of water. Bring to a simmer and cook for 10 minutes for flavours to develop.
Meanwhile, place noodles in a heatproof bowl and cover with boiling water. Set aside for 2 minutes. Add marinara mix to coconut broth, cover, and cook for 3 minutes or until just cooked. Drain noodles and divide between 4 deep serving bowls. Ladle laksa into bowls and garnish with mussels (if using), basil, and sliced chilli. Serve immediately with lime wedges.
Marinara seafood mix is the perfect quick meal ingredient. Use in soups, curries, and stir-fries.