Heat the oil in a large skillet over medium heat. Cook the onion or shallot until tender, about 3-5 minutes. Add the squash and cook until tender, about 5 minutes, stirring often. Stir in beans, corn, and hominy and cook until corn is bright and tender, about 5 minutes. Stir in maple syrup, sage and mint. Season with smoked salt and serve warm or at room temperature.