Parsnip Potato Soup

Name: Parsnip Potato Soup
Prep time: 10 min
Cook time: 35 min
Total time: 45 min
Cuisine: American
Ingredients: 2 tablespoons butter; 1 tablespoons olive oil; 1½ pounds parsnips (peeled and chopped); 2 large russet potatoes (peeled and chopped); 2 large carrots (cleaned and sliced in 1-inch rounds); 1 medium yellow onion (chopped); 3 cloves garlic (minced); 3 tablespoons chopped fresh parsley; 2 tablespoons chopped fresh basil (or ½ tablespoon dried basil); salt and freshly ground black pepper (to taste); 1 bay leaf; 4 cups vegetable broth; ½ cup 2% milk ((you can also use half & half or heavy cream), optional); ½ teaspoon chili powder (or to taste optional)