In a large saucepan, melt  the butter and olive oil. Add the onion and garlic and cook over medium heat, until softened.

Add the tomatoes, stock, cream, sugar, celery seed and oregano and season.

Bring the soup to a boil over high heat. Reduce the heat and simmer for 10 minutes.

Blitz the soup until smooth.

Meanwhile, preheat the grill to high and lightly toast the soda bread. Sprinkle with the cheese and grill for 2-3 mins until the cheese is bubbling.

Place the cheesy crouton on top of the soup and enjoy