Serves 6 to 8.
Note: From Nealey Dozier.
• 2 tbsp. unsalted butter
• 1 medium onion, thinly sliced
• 4 c. whole milk (or 2 c. milk and 2 c. water)
• 2 to 3 garlic cloves, smashed
• 1 heaping teaspoon Dijon mustard (or dry mustard powder)
• 2 1/2 lb. (about 6 medium) baking potatoes, peeled
• 1 1/2 c. grated Cheddar cheese, divided
• 3/4 c. heavy cream
• Kosher salt and freshly ground black pepper
Directions
Preheat oven to 375 degrees. Lightly grease a medium sized (1-1/2 to 2 quart) gratin or baking dish.
In a large Dutch oven, melt the butter over medium heat. Add onions and sauté until softened, about 5 minutes. Add the milk (or milk and water), garlic and Dijon mustard, and bring to a gentle boil over medium heat. Add a generous amount of salt and pepper.
Meanwhile, slice the potatoes to 1/8-inch thickness, using a food processor or mandoline for even thickness. (Do not rinse the potatoes.) Add the potatoes to the milk and allow to simmer until the potatoes are almost tender — they should still have some resistance when poked with a paring knife — about 10 minutes.
Using a slotted spoon, transfer half of the potatoes and onions to the baking dish. (Discard the milk or save for another culinary use.) Season generously with salt and pepper and top with 3/4 cup cheese. Cover with the remaining potato mixture, season again with salt and pepper and top with remaining cheese. Pour the cream evenly over the potatoes and cheese.
Bake until crisp and golden on top, 50 minutes to 1 hour. Allow to cool for at least 10 minutes before serving. (Leftovers make a perfect breakfast side.)
Nutrition information per each serving of 8:
Calories290Fat16 gSodium165 mgSaturated fat10 g
Carbohydrates28 gCalcium170 mg
Protein9 gCholesterol52 mgDietary fiber3 g
Diabetic exchanges per serving: 2 bread/starch, ½ high-fat meat, 2½ fat.
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