Summer Harvest Ratatouille recipes

Name: Summer Harvest Ratatouille recipes
Ingredients: 3 bell peppers, assorted colors , seeded, cored and cut into thick wedges; 1 large eggplant , cut into 3/4-inch slices; 2 medium yellow squash , cut lengthwise into 3/4-inch slices; 2 medium zucchini , cut lengthwise into 3/4-inch slices; 1 cup low-sodium vegetable broth or water; 1/2 cup pitted Niçoise or other black olives; 5 large tomatoes (about 2 1/2 pounds) , seeded and chopped; 1 large onion , chopped; 7 cloves garlic , finely chopped; 1/4 teaspoon crushed red chile flakes; 3 tablespoons chopped marjoram or oregano; 1/3 cup chopped fresh parsley; 1 tablespoon red wine vinegar, or to taste