Make a flavorful base by melting butter in a saucepan.
Add diced onion, bell pepper, and celery.
Cook these until soft, for about 5 minutes.
Add garlic and sauté for an additional minute.
Stir constantly to prevent burning.
Pour in heavy cream and bring to a gentle simmer.
Keep stirring until thickened slightly, around 3-4 minutes.
Gradually add shredded cheese, stirring until it melts smoothly.
Ensure the mixture is creamy without lumps.
Stir in shrimp, crab meat, and season with cayenne pepper, salt, and pepper.
Simmer until the seafood is cooked through.
Typically takes about 5 minutes.