Sauté the Vegetables

1. Heat Oil and Butter: In a large pot, heat the olive oil and unsalted butter over medium heat.
2. Add Onions and Peppers: Sauté the chopped onion and red bell pepper until softened, about 5 minutes.
3. Stir in Garlic: Add the minced garlic and cook for an additional minute until fragrant.

Prepare the Bisque Base

1. Add Flour: Sprinkle the flour over the vegetables and stir well to combine, cooking for 1-2 minutes.
2. Add Broth: Gradually pour in the chicken or seafood broth while stirring to prevent lumps.

Add Shrimp and Corn

1. Bring to a Simmer: Bring the mixture to a gentle simmer and cook for about 10 minutes.
2. Add Shrimp and Corn: Stir in the shrimp and corn, cooking until the shrimp are pink and opaque, about 3-5 minutes.

Finish with Cream and Seasoning

1. Stir in Cream: Lower the heat and add the heavy cream, stirring well to combine.
2. Season to Taste: Add the Cajun seasoning, salt, and black pepper. Adjust seasoning as needed.

Serve

1. Ladle into Bowls: Divide the bisque among serving bowls.
2. Garnish and Enjoy: Top with sliced green onions and serve warm.