Seafood, bean and tomato stew

Ingredients

• 1 brown onion (150g), sliced thinly
• 2 cloves garlic, crushed
• 2 stalks celery (300g), trimmed, chopped finely
• 1 tablespoon finely chopped fresh rosemary
• 1/3 cup (80ml) dry white wine
• 1/4 cup (70g) salt-reduced
• 2 tablespoons tomato paste
• 2 x 400g canned crushed tomatoes
• 2 cups (500ml) water
• 700 grams seafood marinara mix
• 425 grams can four-bean mix, rinsed, drained
• 1/3 cup fresh flat-leaf parsley, coarsely chopped
• 20 centimetre piece baguette (80g), sliced into 8 rounds