How to Make It
Light a grill or preheat the broiler. Grill or broil the poblanos, turning frequently, until charred all over, about 4 minutes. Transfer the chiles to a bowl, cover with plastic wrap and let stand for 15 minutes. Peel and seed the poblanos and cut them into 1/2-inch thick strips.
In a large skillet, heat the olive oil. Add the red onion and cook over moderately high heat until just softened, about 3 minutes. Add the Swiss chard stems and cook until crisp-tender, about 3 minutes. Stir in the garlic and poblanos and cook until the garlic is fragrant and the chiles are heated through, about 2 minutes. Add the chard leaves and cook, stirring occasionally, until tender, about 6 minutes. Add the hominy and cook until heated through, 1 minute. Season with salt and pepper and transfer the stew to a bowl. Serve with lime wedges.