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Good Housekeeping published a mashed potato casserole recipe that can be assembled and refrigerated for up to two days before baking. The recipe makes 10 servings and takes 38 to 42 minutes to bake from chilled at 425°F.
Good Housekeeping has published a mashed potato casserole recipe that can be assembled up to two days ahead and baked shortly before serving, offering home cooks a way to prepare a holiday side dish in advance. The recipe serves 10 and calls for potatoes, butter, cream cheese, sour cream, warm milk and scallions.
The preparation begins by boiling 4 pounds of peeled, quartered gold potatoes in salted water until tender, a process the recipe estimates at 18 to 22 minutes. The drained potatoes are passed through a ricer or food mill, or mashed, then gently combined with butter, cream cheese, sour cream and warm whole milk. Most of the sliced scallions are folded in; the remainder is reserved for serving.
The potato mixture is spread in a buttered 9-by-13-inch casserole dish. For same-day serving, Good Housekeeping directs cooks to bake it at 425°F for 25 to 30 minutes, until bubbling and browned in spots, then let it rest for 15 minutes. For advance preparation, cover the unbaked casserole and refrigerate it for up to two days.
When baking the chilled casserole, the recipe says to take it from the refrigerator and bake at 425°F for 38 to 42 minutes, until heated through and golden in spots. Good Housekeeping lists the total recipe time as 1 hour 40 minutes and estimates 321 calories per serving. The publication says its team tests each recipe at least three times, and often more, using different appliances and ingredient brands and gathering feedback from tasters.
A Holiday Side Made Ahead
The practical value is moving some cooking out of the busiest part of a holiday meal. The potatoes can be prepared and placed in the refrigerator before the day they are served, leaving only the final bake to fit around other dishes. That can help households coordinate oven time and reduce last-minute preparation, although the recipe does not specify how much time it saves compared with making mashed potatoes on the day.
The dish is also designed to be served from a casserole rather than requiring a separate step to whip or reheat potatoes at the table. Its stated yield of 10 servings gives readers a scale for planning, while the calorie and nutrition figures offer a reference for those tracking food intake. The nutrition information is an estimate supplied with the recipe, not a measure of every possible ingredient variation.
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How the Recipe Handles Advance Prep
The report frames the casserole as a solution to the workload of holiday cooking. Its instructions distinguish between same-day baking and refrigerating the assembled dish: the base recipe gives a shorter bake for an unchilled casserole, while the make-ahead directions provide a longer range for one coming straight from the refrigerator.
Good Housekeeping says its culinary team tests recipes at least three times, sometimes more. The publication describes varying the appliances used, including gas, electric and induction ranges, and testing ingredient brands. It also says dozens of people taste dishes during development. These are the publication’s stated testing practices; the supplied report does not provide separate test results or comparisons for this specific casserole.
““Save yourself some time by making this creamy mashed potato casserole up to two days in advance.””
— Good Housekeeping recipe report
Details the Recipe Does Not Specify
The published instructions do not say whether the casserole should come to room temperature before baking; they direct cooks to remove it from the refrigerator and bake it. They also do not give guidance for freezing the dish, extending refrigeration beyond two days, or reheating leftovers. The stated bake time is a range, so the recipe’s description—heated through and browned in spots—is the available doneness guide.
The supplied report does not include independent testing data, reader reviews or comparisons with other make-ahead potato dishes. Its claims about richness and flavor are presented as the publication’s description of the recipe, not as independently measured findings.
Bake and Serve Within Two Days
Readers following the make-ahead method can assemble the casserole, cover it and keep it refrigerated for up to two days, then bake it at 425°F for the stated 38 to 42 minutes. The instructions call for letting the baked casserole rest for 15 minutes before serving and topping it with the reserved scallions.
Good Housekeeping invites readers who make the recipe to comment on it, but the supplied material does not report a new testing milestone or a planned update. Any changes to the recipe or additional serving guidance would depend on future updates from the publication.
Key Questions
How far ahead can the casserole be prepared?
Good Housekeeping says to cover the unbaked casserole and refrigerate it for up to two days.
How long does the chilled casserole bake?
Bake it at 425°F for 38 to 42 minutes, until it is warmed through and golden in spots.
How many people does the recipe serve?
The recipe yields 10 servings.
What ingredients make up the mashed potatoes?
The recipe uses gold potatoes, butter, cream cheese, sour cream, warm whole milk, salt and scallions.
How long does the casserole bake if it is not refrigerated first?
For same-day preparation, the recipe gives a baking time of 25 to 30 minutes at 425°F, followed by a 15-minute rest.
Source: goodhousekeeping.com
