Heat the oven in the grill mode, spread the vegetables on a baking sheet and put in the oven for 10-15 minutes until they turn black skin and they become quite soft.
Cool the vegetables, peel the tomato and pepper (this is done very quickly), put all the vegetables in a blender, salt and pepper, beat all until smooth.
Put the pan on the fire, spread the sauce, three cheese there, add olive oil, and heat until it is time to melt the cheese, stirring constantly (you can add a little water to the sauce became thinner) as the cheese melts put back in the blender, add Basil, lemon juice, and whisk again. Be sure to taste, you may need to add salt and pepper. If the taste you like, and add anything not necessary, is served with meat, chicken or what ever else, I had potatoes and rustic roasted chicken).