Preheat oven to 350°F. Grease a 2-quart casserole dish. In a large skillet, combine squash and onions. Add poultry seasoning and 2 teaspoon salt. Cook on medium high heat, stirring occasionally until water is rendered and squash is slightly tender; drain well. In a separate bowl, combine House-Autry Hushpuppy with Onion Mix, beaten eggs, sour cream, pepper and remaining salt; mix thoroughly. Gently fold in squash mixture and pour into prepared dish. Spread cheese evenly over top. Bake for 40-45 minutes, or until golden brown on top.