Preheat your oven to 375°F (190°C).
In a large bowl, combine the cornmeal and baking powder.
Add the milk and mix until smooth.
Incorporate the melted butter and mix well.
Stir in the eggs, creamed corn, diced bell peppers, and onions.
Add salt and pepper to taste.
Fold in the shredded cheese gently.
Pour the mixture into a greased baking dish.
Bake for 30-35 minutes or until golden brown and set in the center.
Let it cool slightly before serving.