Roasted Sardinian Tomato Chutney

The Italian island of Sardinia is famous for its juicy and flavoursome vine tomatoes, sweet and intense they are excellent in salads, soups and sauces. This simple and easy to produce chutney makes good use of these fantastic little gems, and is a wonderful accompaniment to cold meats and cheese.
Ingridients
To produce you will require 500g of Sardinian vine tomatoes, 2 medium red onions, 2 cloves of garlic, 250g of muscovado sugar, 250ml of red wine vinegar, 2 tbsp of balsamic vinegar, a sprig of fresh rosemary and a little olive oil.