America's Test Kitchen Twice-Baked Potatoes Recipe: Cheesy Cornmeal Crust Meets Ultra-Creamy Centers

America's Test Kitchen's twice-baked potatoes recipe transforms a classic side into a restaurant-quality showstopper with a cheesy cornmeal crust and ultra-creamy centers. This isn't your grandmother's twice-baked potato—it's a method developed through rigorous testing to achieve perfect texture every time.

The secret lies in precise baking techniques and a topping blend that delivers both crunch and creaminess in one bite.

What sets this recipe apart is the foolproof approach to baking and rebaking, ensuring your potatoes emerge with a golden, crispy exterior while maintaining that velvety interior. We're talking about tender, fluffy potato centers that hold their shape beautifully, topped with a layer that's both sturdy and delicious.

The cornmeal adds a subtle crunch that contrasts perfectly with the creamy filling.

This recipe delivers professional-level results without requiring advanced skills. You'll start with baking potatoes until tender, then scoop out the insides, mix them with a rich cheese and cream blend, and return them to the oven for a final bake.

The result? A dish that's impossible to resist, with every bite offering that perfect balance of textures and flavors.

The best part? This recipe scales effortlessly for gatherings, making it ideal for holidays or family dinners. Whether you're serving it as a side or making it the star of the meal, these twice-baked potatoes will have everyone asking for seconds. Let's get started on creating your perfect batch.

Ingredients for america's test kitchen twice baked potatoes

Four perfect russets and a handful of cheeses transform humble potatoes into a showstopper side dish.

The potatoes are the foundation, so pick Russets—their floury texture holds up perfectly to baking twice. Whole Foods or local farmers markets often carry the best quality, but any reputable grocery store's Russets will work if they're firm and free of sprouts. For the cheeses, Cabot or Tillamook sharp white cheddar melts beautifully, but any aged cheddar with good bite will do. The cornmeal is key for that perfect crust—Bob's Red Mill fine grind is my go-to, but any fine cornmeal works. Pro tip: if your potatoes are uneven, weigh them to ensure equal baking.

No sharp cheddar? Pepper jack or Gruyère add different but delicious flavors. Running low on sour cream? Greek yogurt at half the amount works in a pinch. The garlic can be omitted if you're sensitive to strong flavors, but trust me—it makes the filling sing. For the cornmeal topping, if you're out, panko breadcrumbs mixed with a pinch of salt gives a similar texture. The butter is non-negotiable for brushing—European-style unsalted like Plugrá has the best flavor. And if you're making these ahead, the filling can be prepped and refrigerated for up to 24 hours before baking.

These reheat beautifully—just pop them in the oven at 375°F for 15-20 minutes until the tops are golden. They're even better the next day, honestly. For storage, keep them covered at room temperature for up to 2 hours, then refrigerate. They'll keep for 3-4 days in the fridge, but the texture starts to soften after day 2. Freezing isn't recommended—they get gummy when thawed. Make a double batch if you can—these disappear faster than you'd think, especially when you add that final sprinkle of freshly grated Parmesan right before serving.

Step-by-step instructions for america's Test Kitchen twice-baked potatoes

This method delivers a perfect balance of crispy cornmeal crust and velvety cheesy centers every time.

Preheat your oven to 425°F and line a baking sheet with parchment paper. Pierce each of the 4 whole Russet Potatoes all over with a fork, about 8-10 times per potato. Rub them lightly with 2 tbsp Butter to help crisp the skin slightly during the initial bake.

Place the potatoes directly on the baking sheet (no need for a rack) and bake for 45-50 minutes until they feel soft when gently squeezed. They should yield slightly to pressure but still have some resistance—they'll finish cooking in the oven later. Rotate the pan halfway through for even browning. The skin should be lightly golden, not dark brown, at this stage.

While the potatoes bake, combine 1.5 cups Sharp White Cheddar Cheese, 0.25 cup Cornmeal, 0.25 cup All-Purpose Flour, 1.5 tsp Salt, and 0.5 tsp Ground Black Pepper in a medium bowl. Mix until evenly distributed—this creates the perfect textural contrast between the crispy crust and creamy filling.

In a separate small bowl, whisk together 0.5 cup Heavy Whipping Cream, 0.25 cup Sour Cream, 2 cloves Garlic Cloves (minced), and 0.25 cup Parmesan Cheese. The sour cream adds richness while keeping the filling light, and the garlic infuses subtle depth. Let this mixture sit at room temperature while you prepare the potatoes.

Carefully slice each potato lengthwise down the center, creating two halves. Use a spoon to scoop out the flesh, leaving about ¼-inch thick walls in the skins. Place the skins on a clean baking sheet and set aside. Transfer the scooped potato flesh to a large mixing bowl.

Mash the potato flesh with a potato masher or fork until smooth—you want a consistency similar to mashed potatoes but with some slight texture. The skins should be dry enough to hold their shape when topped with the crust mixture. If they look too moist, pat them dry with a paper towel before proceeding.

Preheat your oven to 375°F for the second baking. In the bowl with the mashed potatoes, gently fold in the cheesy cornmeal mixture and the cream mixture until fully combined. The filling should be thick but still pipeable—if it's too dry, add 1-2 teaspoons of milk or cream to loosen it.

Spoon the filling back into the potato skins, mounding it slightly above the edges. Sprinkle each potato with 0.5 cup Extra-Sharp White Cheddar Cheese and 0.25 cup Fresh Chives (chopped). Bake for 25-30 minutes until the tops are deep golden brown and the filling is bubbling at the edges.

Switch your oven to broil and place the potatoes on the middle rack. Broil for 2-3 minutes until the tops develop a beautiful golden-brown crust and the cheese is melted and bubbly. Watch closely—they can go from perfect to burnt in seconds. Remove from the oven and let rest for 5 minutes before serving.

This resting period allows the filling to set slightly, making it easier to serve without losing the creamy centers. Garnish with additional chopped chives if desired, and serve immediately while the crust is still crisp and the filling is piping hot. The contrast of the crispy cornmeal crust with the ultra-creamy cheese filling is what makes these potatoes truly exceptional.

Troubleshooting this recipe

Potatoes Too Dry

If your potatoes emerge dry and crumbly instead of creamy, you likely overbaked them in the first step. Russets should feel tender when pierced with a fork but still hold their shape—think of a ripe avocado's texture.

For next time, pull them when they reach 205°F internal temperature (use a meat thermometer). Also, ensure you're using full-fat cream and sour cream—low-fat versions will yield a drier filling. 🥔

Filling Too Runny

Runny filling usually means too much liquid was added during mixing. The secret is precise measurements: stick to the 0.5 cup heavy cream and 0.25 cup sour cream ratios. If your mixture looks too loose, let it sit uncovered in the fridge for 10-15 minutes to thicken naturally.

For an immediate fix, stir in 1 tbsp cornstarch mixed with 1 tsp cold water until fully incorporated.

Crust Not Crispy

A soggy crust often happens when the potato skins absorb too much moisture. After scooping, pat the skins dry with paper towels before adding the filling. For extra crunch, broil for 2-3 minutes at the end (watch closely!).

The cornmeal-to-flour ratio (1:1) is crucial—too much flour makes the crust tough. Also, ensure your oven reaches 375°F before baking the second time.

Uneven Baking

If some potatoes bake faster than others, rotate your baking sheet halfway through the 25-30 minute second bake. For even browning, place the potatoes on the middle rack. If using a dark baking sheet, transfer to a light-colored one for the final bake—dark pans can cause uneven browning.

Another trick: brush the skins with 1 tbsp melted butter before adding the filling for even heat distribution.

Cheese Not Melting

Cheese that doesn't melt properly is usually too cold or not aged enough. Use freshly grated sharp white cheddar (pre-shredded contains anti-caking agents that prevent melting). Let your cheese sit at room temperature for 15 minutes before mixing.

For extra insurance, sprinkle the top with 0.25 cup breadcrumbs before the final bake—they'll toast while the cheese melts underneath.

Potato Skins Breaking

Thin or overcooked skins are the usual culprits. Leave at least ¼-inch thick walls when scooping—thinner skins can't support the filling. If your skins are already too thin, reinforce them by brushing with 1 tbsp beaten egg white before adding the filling.

For extra stability, chill the assembled potatoes in the fridge for 15 minutes before baking to help the filling set slightly.

Frequently asked questions