- Step 1
Heat the olive oil in a large saucepan over medium heat. Add the onions, garlic and chilli and cook for 3 minutes or until the onions have softened slightly.
- Step 2
Increase heat to medium-high and add the tomatoes and stock and bring to the boil. Simmer, uncovered, for 20 minutes.
- Step 3
Add the mussels. Cover and cook for 5 minutes or until the mussels have opened and are just cooked. Discard any unopened mussels.
- Step 4
Add the basil and sugar. Taste and season with salt and pepper. Serve with crusty bread.
For the Kids: tomato mussels - omit the chilli and take the mussel meat out of the shells before serving.