Preheat oven to 400. Add pepper, cherry tomatoes and garlic to an oven safe pan and drizzle with olive oil, salt and pepper. Cook for about 20 min, or until tender and the skin can be peeled (check and move around halfway through cooking). Remove and let cool while you prep everything else.
When the pepper, tomato and garlic is cool enough to touch, peel the skin, remove the seeds, and add to a blender (or mortar and pestle) along with the pepper oil from the pan, vinegar and olive oil. Blend and season to taste.
Slice tomatoes and season with salt and pepper. Drizzle with olive and champagne vinegar. Toast bread and spread on romesco. Add turkey, tomatoes, cheese, basil and a little sliced red onion. Enjoy!