INGREDIENTS
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10 oz (300 g) Cheddar cheese, cut into chunks
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6 russet potatoes, peeled and cut in half (about 1½ lbs/750 g)
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1½ sweet onions, quartered
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Pinch salt
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Pinch freshly ground black pepper
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Pinch freshly ground nutmeg
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1/3 cup (75 mL) unsalted butter
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¼ cup (50 mL) all purpose flour
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3 cups (750 mL) milk, at room temperature (see Notes)
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13-by 9-inch (3 L) baking dish, buttered