Put a cast-iron skillet in the oven while it's heating up to 400°. Preheating the skillet is the secret to a crunchy crust.
Whisk dry ingredients in a bowl.
Mix the sour cream, milk, butter, and eggs.
Add jalapeños and corn.
Stir wet into dry until just combined.
Pull the pan out and add a tablespoon of butter. When it’s melted, put batter in.
Bake for 30–35 minutes until set.
