Roast the poblano chiles under the broiler until blackened, about 5 minutes per side. Place chiles in a paper sack or plastic food-storage bag, close it tight and let the chile steam for 20 minutes. Take the chile out of the bag and rub off the skin. Remove stem and seeds and cut dice chiles.
Preheat the oven to 350° F.
On medium-low heat, heat the vegetable oil and then cook the crumbled chorizo while occasionally stirring in a 10-inch cast-iron skillet until brown, about 8-10 minutes. With a slotted spatula, remove the chorizo and drain any excess grease from the skillet, leaving 1 teaspoon. Add to the skillet the diced onions and jalapeños while occasionally stirring, cook on medium-low heat until onions are translucent, about 5 minutes. Add the garlic and cook for 30 more seconds.
Remove the skillet from the heat and add the diced poblano chiles, chorizo, hominy, sour cream, cumin, cayenne, cilantro, lime juice and half of the cheddar cheese. Stir until well combined, taste and add salt and black pepper and adjust seasonings. Top with remaining the cheddar cheese and bake uncovered for 30 minutes or until brown and bubbling.
Green chile hominy casserole with chorizo | www.homesicktexan.com