Cornbread-Topped Corn Casserole

Preheat oven to 375°F. Lightly grease an 8-by-11-inch (2-quart) baking dish. Heat 1 tablespoon butter in a medium skillet over medium-high heat. Add poblano and onion; cook, stirring occasionally, until softened, about 5 minutes. Transfer to a medium bowl and set aside.

Place 3 1/2 cups corn in a blender; add water and blend until smooth but thick, about 45 seconds. Transfer to the bowl with the onion and poblano.

Whisk cornbread mix, yogurt, milk, eggs, salt, 3/4 cup cheese and the remaining 1 1/2 tablespoons melted butter together in a large bowl until combined. Add the vegetable mixture and the remaining whole corn kernels; stir to combine. Transfer to the prepared baking dish; top with the remaining 1/4 cup cheese. Bake until puffed and golden brown on top, about 45 minutes. Let cool slightly, about 10 minutes. Top with scallions and serve with hot sauce, if desired.