In a medium pot, bring the chicken broth to a boil. Slowly whisk in the stone-ground grits. Reduce heat to low and cook, stirring occasionally for about 20-25 minutes, until thickened.
Stir in the butter and shredded cheddar cheese into the grits, mixing until creamy and smooth. Season with salt and pepper to taste. Keep warm.
In a large skillet over medium heat, add olive oil, then sauté the diced onion and bell pepper until softened, about 5 minutes.
Add the minced garlic to the skillet and cook for an additional minute until fragrant.
Toss the shrimp with Cajun seasoning and add them to the skillet. Cook for 3-5 minutes, or until the shrimp turn pink and are cooked through.
Pour in the heavy cream, stirring to combine and let simmer for 2-3 minutes until slightly thickened. Season with salt and pepper.
To serve, spoon a generous portion of the cheesy grits onto a plate and top with the Cajun shrimp mixture.
Garnish with sliced green onions for a fresh touch.
Notes
Feel free to adjust the spice level by adding more or less Cajun seasoning.