Step 1

Start the shrimp: Heat a large nonstick skillet over medium heat. Add the bacon and cook, stirring occasionally, until crisp, about 7 minutes. Add the shrimp to the skillet and sprinkle with the Cajun seasoning and salt. Increase the heat to medium-high and cook, stirring occasionally, until the shrimp are mostly pink but not quite cooked through, about 2 minutes. Transfer the shrimp and bacon mixture to a bowl and set aside; place the skillet back on the heat (do not wash).

Step 2

Melt the butter in the skillet. Add the light green scallions, celery, bell pepper, and garlic and cook, stirring occasionally, until the vegetables soften, about 4 minutes. Sprinkle in the flour and mix until incorporated. Whisk in the chicken broth, Worcestershire sauce, and hot sauce and bring to a boil. Reduce the heat and simmer, uncovered, until slightly thickened, 5 to 7 minutes. Remove the skillet from the heat and set aside while you make the grits.

Step 3

For the grits: In a medium saucepan set over medium heat, bring the milk and salt to a boil. Whisking constantly, slowly pour the grits into the bubbling milk. Reduce the heat to low and simmer, whisking often, until the grits become thick and creamy, about 5 minutes. (Stir continuously to prevent sputtering.) Remove the pan from the heat and stir in the cheese. Taste and adjust the salt, if necessary. Remove the pan from the heat and cover with a lid to keep warm until ready to serve.

Step 4

Place the skillet with the vegetable/sauce mixture back on the stove and bring to a simmer over medium heat. Return the shrimp and bacon, along with any juices that collected in the bowl, to the skillet and mix well. Cook, stirring frequently, until the shrimp are cooked through, 2 to 3 minutes. Season to taste with salt and pepper. Sprinkle a small handful of the dark green scallions over the shrimp (you may not need all of them).

Step 5

Divide the grits among serving bowls. Spoon the shrimp and sauce over the grits and serve. Pass the hot sauce, if desired.