Preheat your oven to 350°F.
Grease a 9x9 baking dish or medium casserole dish.
Pour the drained whole-kernel corn into a large mixing bowl.
Add the creamed corn and stir to combine.
Add the sour cream and mix until smooth.
Pour in the melted butter and stir again.
Crack in the two eggs and mix until fully incorporated.
Sprinkle in the smoked paprika, salt, and black pepper.
Stir in the finely chopped jalapeños.
Add the shredded cheddar cheese and mix well.
Pour in the Jiffy corn muffin mix and stir until just combined.
Transfer the casserole mixture into the greased baking dish.
Smooth the top with a spatula.
Bake for 45 to 50 minutes or until the center is set and the top is golden.
Let the casserole rest for 10 minutes before cutting and serving.