funeral potatoes recipe

2 tablespoons olive oil - 1 large onion, chopped - 3 cloves garlic, minced - 3 carrots, peeled and sliced - 3 celery stalks, sliced - 2 potatoes, peeled and diced - 1 zucchini, chopped - 1 yellow squash, chopped - 1 bell pepper, chopped (any color) - 1 can (14.5 ounces) diced tomatoes, with juice - 6 cups vegetable broth - 1 teaspoon dried thyme - 1 teaspoon dried basil - 1 teaspoon dried oregano - Salt and black pepper to taste - 1 cup frozen peas - 1 cup green beans, chopped - 1 cup corn kernels (fresh, frozen, or canned) - Fresh parsley, chopped (for garnish)