In a small saucepan, bring 1 cup of water or low-sodium broth to a boil.
Gradually whisk in the stone-ground grits and a pinch of sea salt, then reduce heat to low, cover, and simmer for 15-20 minutes until creamy.
Once the grits are cooked, remove from heat and stir in the plain Greek yogurt to achieve a rich, velvety texture.
While the grits simmer, heat the ghee in a large skillet over medium-high heat.
Add the diced yellow onion and red bell pepper to the skillet, sautéing for 3-4 minutes until the vegetables are tender-crisp.
Toss the raw shrimp with Cajun seasoning, sea salt, and black pepper until evenly coated.
Add the seasoned shrimp to the skillet and cook for 2-3 minutes per side until pink and opaque.
Squeeze fresh lemon juice over the shrimp and stir in the chopped fresh parsley.
Spoon the creamy grits into a bowl and top with the zesty Cajun shrimp and vegetable mixture.