In a medium sauce pan bring 2 cups water to a boil. Add rice cover and simmer for around 15-20 minutes or until all the water has been absorbed. Remove from heat and set aside.
Combine the shrimp and 2 teaspoons of Cajun seasoning in a bowl. Mix until the shrimp are evenly coated with the seasoning. Set aside.
Heat 1 tablespoon of oil in a heavy pot like a Dutch oven over medium high heat. Add shrimp and cook for 2-3 minutes until pink then set aside.
Add the remaining 1 tablespoon of oil, onion, green bell peppers, celery, and garlic to the Dutch oven. Cook for 3-4 minutes.
Add tomato paste, bay leaf, dried thyme, remaining 1 teaspoon Cajun seasoning, beans, chicken broth, and hot sauce. Bring to a simmer. Cover and cook for 15 minutes. Remove the lid and cook for an additional 15 minutes.
Using a spoon smash some of the kidney beans to thicken the sauce. Season with salt and pepper to taste. Once thickened stir in the shrimp and serve over rice. Garnish with parsley.
Notes
Storage: Refrigerate for up to 3-4 days or store it in the freezer for up to 3 months. Tips:
Wait until the end to add salt. The broth, beans, and cajun seasoning are all salted. Adding additional salt could ruin the flavor.
Control the thickness of the sauce by smashing only a few beans at a time with a wooden spoon.