In a small saucepan, bring the chicken broth and water to a boil over medium-high heat.
Whisk in the stone-ground grits and sea salt, then reduce the heat to low and cover.
Simmer the grits for 15 to 20 minutes, whisking occasionally, until they reach a thick and creamy consistency.
Stir half of the grass-fed butter into the cooked grits and keep them covered on the lowest heat setting.
While the grits cook, pat the shrimp dry with a paper towel and toss them in a bowl with the Cajun seasoning and black pepper.
Heat a large skillet over medium heat and melt the remaining grass-fed butter.
Add the diced onion and red bell pepper to the skillet, sautéing for 3 to 4 minutes until the vegetables are tender.
Add the minced garlic and seasoned shrimp to the skillet, cooking for approximately 2 minutes per side until the shrimp are pink and opaque.
Divide the creamy grits into serving bowls and top with the sautéed shrimp and vegetable mixture.
Garnish with freshly chopped parsley before serving.