Recipe Tips
Special ExtraFor added colour and flavour, substitute 1 sweet potato for 1 of the Yukon gold potatoes.
Make AheadAssemble casserole as directed, except toss sliced potatoes with 1 tsp. lemon juice before stirring into sauce. Refrigerate up to 4 hours. When ready to serve, bake, uncovered, 1 hour or until potatoes are tender.
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