01 -
Wash and thinly slice the bell peppers. Peel and slice onions. Chop or crush garlic cloves. If using fresh tomatoes, chop them finely.
02 -
Heat olive oil in a large skillet over medium heat. Add onions and cook for 5 to 7 minutes, stirring, until softened.
03 -
Stir in the garlic and cook for an additional minute, releasing the aroma.
04 -
Add sliced peppers to the pan, stirring to coat in oil. Cook for 10 minutes, stirring occasionally.
05 -
Incorporate chopped tomatoes along with salt and black pepper. Stir well to combine.
06 -
Cover skillet and reduce heat to low. Simmer for 25 to 30 minutes, stirring now and then, until vegetables are tender and flavors meld.
07 -
Uncover, taste, and adjust seasoning. Add a splash of red wine vinegar if desired. Sprinkle with chopped fresh basil or parsley before serving.