Cheesy fried Southern comfort food. Prep time is overnight chilling; cooking time can be reduced if you use quick-cooking grits in place of stone ground grits. Instant grits - *shudder* - not recommended for this recipe.
Prepare seasoning blend. In a small bowl, combine salt, black pepper, thyme, garlic powder and red pepper. Set aside.
In a skillet, melt butter. Saute onions until softened. Set aside.
Bring grits and water to a slow boil and cook until thickened and soft. Add onion, cheddar/Jack, mozzarella and American cheeses and stir until cheeses melt. Add reserved seasoning blend and Cajun seasoning. Pour into a loaf pan lined with plastic wrap and cool overnight in refrigerator.
Remove from mold and slice into 3/4- to 1-inch thick slices. Heat a griddle over medium-high heat and spray with nonstick cooking spray or lightly grease with butter. Cook grits 2 to 3 minutes per side until heated through. Put about 1 1/2 tablespoons of cheddar cheese on the griddle and place the hot grits on top. Cook until the cheese forms a crust.