My mother-in-law served these at every holiday dinner for 40 years. Simple but unforgettable.

These oven baked 3-ingredient potato half shells are the kind of thing that quietly steals the show at a holiday table. My mother-in-law, Irene, set out a big white platter of these at every Thanksgiving, Christmas, and Easter for over 40 years. They’re nothing fancy to look at—just crisp, golden-brown potato shells with their tender centers fluffed and salted—but people would hover near the kitchen waiting for them to come out of the oven. This is old-fashioned Midwestern cooking at its simplest: three ingredients, no fuss, and a method so dependable you can make it with your eyes half closed. They’re easy on the budget, easy to scale up for a crowd, and they taste like home.

Serve these potato half shells piled on a warm white platter, just as they are, with a little dish of extra salt on the side. They’re perfect alongside roast turkey, ham, or meatloaf, and they soak up gravy beautifully. For a simple supper, pair them with a green salad and sliced roast beef or baked chicken. They also make a cozy appetizer: set the platter in the middle of the table and let everyone grab a shell or two with their fingers. A crisp green bean casserole, buttered corn, or a simple cucumber salad all feel right at home next to these potatoes.

Servings: 6

6 medium russet potatoes (about 2 1/2 to 3 pounds total), scrubbed

Preheat your oven to 400°F (200°C). Line a baking sheet with foil or parchment for easy cleanup.

Scrub the potatoes well under cool running water, removing any dirt. Pat them completely dry with a clean towel so they crisp better in the oven.

Place the whole potatoes directly on the prepared baking sheet. Bake for 45 to 60 minutes, depending on size, until the skins are firm and the insides feel very soft when you gently squeeze with an oven-mitted hand or pierce with a knife.

Remove the potatoes from the oven and let them cool just until you can handle them comfortably, about 10 to 15 minutes. Leave the oven on at 400°F (200°C).

Using a sharp knife, slice each potato in half lengthwise. Hold a half in your hand with a towel and, using a spoon, gently scoop out the fluffy center into a bowl, leaving about a 1/4-inch thick wall of potato attached to the skin. Work carefully so the shells don’t tear. Arrange the hollow shells cut side up back on the baking sheet in a single layer.

Mash the scooped-out potato in the bowl with a fork until it’s mostly smooth. Drizzle in the melted butter and sprinkle with the salt. Taste and add a pinch more salt if needed. The potato should taste well-seasoned and buttery.

Spoon the seasoned mashed potato back into each shell, dividing it evenly. Use the back of the spoon to press it gently so it adheres to the skin, then lightly hollow out the center so you have a neat, shallow shell of potato lining each skin. This hollow helps the edges crisp and brown.

Brush or drizzle any remaining melted butter lightly over the top edges of the shells and exposed skins for extra crispness. If you’ve run out, melt another tablespoon and use that.

Return the baking sheet to the oven and bake the filled shells for 15 to 20 minutes, until the rims and edges are golden brown and crisp and the insides are hot. If you like them extra crispy, you can leave them in a few minutes longer, watching carefully so they don’t burn.

Transfer the hot potato half shells to a warm white platter, arranging them close together so they hold their heat. Serve right away while the edges are crisp and the centers are soft and steamy.

You can dress these up or keep them as plain as my mother-in-law always did. For a little color, sprinkle the tops lightly with paprika or dried parsley before the final bake. If you don’t mind adding more ingredients, you can stir a handful of shredded cheddar or Swiss cheese into the mashed potato before spooning it back into the shells, or top each shell with a bit of grated cheese for the last 5 minutes of baking. Crumbled cooked bacon, finely chopped green onion, or a dollop of sour cream on the table for serving also work nicely when you’re not strictly keeping to three ingredients. To make ahead, you can bake and hollow the potatoes earlier in the day, then refrigerate the shells and mashed centers separately. When ready to serve, warm the mashed potato with the butter and salt, fill the shells, and bake until hot and crisp, adding a few extra minutes if they were chilled. For smaller appetites or finger-food platters, use small russet or Yukon Gold potatoes and treat them the same way, adjusting the baking time down slightly. Food safety tips: Always wash potatoes well to remove soil, and trim away any green spots or deep sprouts before baking. Handle hot potatoes with oven mitts or towels to avoid burns, and let them cool just enough so steam can escape before scooping. If you prepare the shells in advance, refrigerate them promptly and bake within 24 hours, reheating until the centers are piping hot (165°F/74°C) before serving. Discard any leftovers that have sat at room temperature for more than 2 hours.