In a small saucepan, bring the water and chicken broth to a boil over medium-high heat.
Whisk in the stone-ground grits and sea salt; reduce heat to low, cover, and simmer for 20-25 minutes until the grits are tender and creamy.
While the grits are cooking, toss the peeled and deveined shrimp in the Cajun seasoning until every piece is evenly coated.
Heat the olive oil in a large skillet over medium-high heat.
Add the diced bell pepper, yellow onion, and celery to the skillet, sautéing for about 5 minutes until the vegetables have softened.
Stir in the minced garlic and cook for 1 minute until the aroma is released.
Add the seasoned shrimp to the skillet in a single layer and cook for 2-3 minutes per side until they are pink and opaque.
Once the grits are finished, stir in the ghee until it is completely melted and the texture is velvety.
Divide the creamy grits into serving bowls and top with the sautéed Cajun shrimp and vegetable mixture.
Garnish the dish with freshly chopped parsley and a final crack of black pepper before serving immediately.