This particular soup is probably the easiest because all you have to do is throw whatever you love in a baking pan with a little olive oil and salt and grill it up. Veggie soup is so so so simple and there is no way honestly to make it taste bad. I am a huge fan of pacific soups and so here I was dreaming of their roasted red pepper and tomato.
In a pan add:
Onions, thickly sliced
Plum Tomatoes, in half
red peppers, halved and seeded
drizzle olive oil over the lot, along with some thyme, oregano, sage, parsley, salt & pepper, and plop into the oven at a reasonable 375 for as many hours as it takes for all of your veggies to be cooked, and very slightly chard.
Then adding a little veggie stock wizz through a blender and strain, here I served with a little casen crem, which doesn´t exist in the English-speaking world that I know of, but creme fraiche or sour cream works well too.