Heat the oven to 350°F. Grease a 2-quart baking dish with 1 tbsp butter.
Whisk the eggs in a large bowl until smooth and lightly foamy.
Add milk, cream, melted butter, and sugar. Whisk until evenly combined.
Season with salt, pepper, and nutmeg. Whisk again to blend.
Sprinkle in flour, cornmeal, and baking powder. Whisk just until no dry spots remain.
Fold in the corn kernels and the cream-style corn until evenly distributed.
Pour the batter into the prepared dish and tap gently to release air bubbles.
Bake 45–50 minutes, until puffed, golden at the edges, and set in the center.
Let rest 10 minutes. Scatter with chives and serve warm.