Heat a large dry cast iron frying pan and place the sliced peppers, onions, garlic and diced tomatoes and dust with sugar.
Allow a bit of a char to form on the peppers and onions then drizzle with two tablespoons of olive oil.
Add the rest of the seasonings and toss.
Continue to sauté until the onions are caramelized. This will take about 15 to 20 minutes or so.
Taste for seasonings and drizzle with another 2 tablespoons of olive oil.
Serve with fresh Romano or Parmesan cheese, your favorite bread and olive oil.