Butternut Squash Posole

Name: Butternut Squash Posole
Ingredients: 2 tablespoons vegetable oil; 1 tablespoon chili powder; 1 small butternut squash, peeled, seeded and cut into 3/4-inch cubes (about 4 cups); 1 poblano chile pepper, seeded and chopped; 1 teaspoon dried oregano, plus more for sprinkling; 1 teaspoon ground cumin; 2 cloves garlic, finely chopped; Kosher salt; 1 15-ounce can no-salt-added tomato puree; 2 15-ounce cans hominy, drained and rinsed; 1 avocado, diced; Fresh salsa, for topping (optional); Tortilla chips, for serving (optional)