01 - In a large pot or Dutch oven, heat olive oil and 1 tablespoon butter over medium heat.
02 - Add the diced onion, celery, and red bell pepper. Sauté for 4 to 5 minutes until vegetables are softened.
03 - Stir in the minced garlic and cook for 1 minute until fragrant.
04 - Add diced potatoes, corn, Cajun seasoning, smoked paprika, dried thyme, and a generous pinch of salt and black pepper. Stir until evenly coated.
05 - Pour in broth and bring to a simmer. Cook uncovered for 12 to 15 minutes, or until potatoes are fork-tender.
06 - While the chowder base simmers, lightly season the shrimp with salt and pepper.
07 - In a separate skillet, melt the remaining 1 tablespoon butter over medium-high heat. Add shrimp and cook for 2 to 3 minutes per side, until pink and opaque. Set shrimp aside.
08 - Once potatoes are tender, reduce heat to low. Stir in whole milk and heavy cream. Simmer for 5 minutes, stirring often.
09 - Stir in cooked shrimp, reserving a few for garnish if desired. Adjust seasoning with additional salt, black pepper, Cajun seasoning, or hot sauce as needed.
10 - Ladle chowder into bowls and garnish with chopped parsley, sliced scallions, reserved shrimp, and hot sauce as desired. Serve hot.