Roasted Tomato & Red Pepper Pasta

1 1/4 lbs ripe tomatoes 1 red onion 1 red bell pepper 3 cups vegetable stock (or 3 cups water plus 1/2 vegetable bouillon cube) 1 tablespoon olive oil 4 -8[...]

6 large tomatoes , quartered 2 large red peppers, deseeded and roughly chopped 2 garlic cloves , crushed 2 tablespoons low-fat creme fraiche 350 g dry pasta[...]