Makes 4 servings Ingredients 2 Tablespoons olive oil 2 cups onion, thinly sliced 4 cups red peppers, sliced 4 cups tomatoes, diced (or 1 pound canned tomatoes) 1½ teaspoons salt (use less if using canned tomatoes) Black pepper to taste 1 Tablespoon red wine vinegar or cider vinegar Directions Heat oil over medium-low heat. Add