Set a dutch oven over medium heat and add sausage slices; cook for about 4 minutes, or until browned on all side. Remove from pot and set aside.
Add butter and oil to the dutch oven; melt and swirl to coat.
Whisk in the flour; whisk and cook for about 2 minutes, or until flour mixture starts to brown.
Add chicken and continue to cook for 5 minutes, stirring frequently.
Stir in onions, chopped bell pepper, celery, garlic, cajun spice, salt, and pepper.
Continue to cook until veggies are tender, about 5 to 6 minutes, stirring frequently.
Pour in chicken broth and add tomatoes; bring mixture to a boil.
Add in the previously prepared sausage and sliced okra; reduce heat and simmer for 5 minutes.
Remove from heat.
Serve over prepared brown rice and garnish with parsley.