Smokey Shrimp and Grits Casserole

Name: Smokey Shrimp and Grits Casserole
Ingredients: 2 tablespoons unsalted butter; 1 cup vidalia onion (or other sweet onion), diced; 1 teaspoon kosher salt; 2 garlic cloves, minced; 1 teaspoon chipotle chile in adobo sauce, minced; 2 1/2 cups water; 1/2 cup heavy cream; 1 cup old fashioned grits (do not use instant!); 6 ounces smoked cheese (gouda, cheddar or fontina), shredded; 2 large eggs, lightly beaten; 4 scallions, thinly sliced; 1 1/2 pounds large (16-20 count) shrimp, peeled and deveined