Creamy German potato gratin baked with a light lemon-yogurt cream and a golden cheese crust.
Kartoffelgratin is Germany's version of scalloped potatoes, layers of thinly sliced potato baked in a cream sauce until tender and bubbling under a golden cheese crust. This version brightens the traditionally rich, heavy cream base with a bit of yogurt and lemon zest, cutting through the richness while still delivering the deeply comforting, cheesy result the dish is known for. The technique that determines whether a gratin turns out right is slicing consistency -- potatoes need to be cut to a uniform thickness, ideally with a mandoline, so every layer cooks at the same rate. The cream mixture should be poured over gradually in stages as the potatoes are layered, ensuring it reaches every layer rather than just pooling at the bottom, and the dish needs a long, low bake (around 45-50 minutes) so the potatoes turn fully tender before the top over-browns. Served as a hearty side to roasted meats or as a standalone vegetarian main, kartoffelgratin is classic German comfort food, found on family tables especially in colder months.
Serves 4
Preheat oven to 175°C (350°F). Grease a baking dish with butter.
Whisk together heavy cream, yogurt, lemon zest, garlic, nutmeg, salt, and pepper.
Arrange a layer of sliced potatoes in the dish, pour a portion of the cream mixture over, and sprinkle with a little cheese. Repeat layers until all potatoes are used.
Pour any remaining cream over the top layer and finish with the remaining cheese.
Cover with foil and bake 30 minutes.
Remove the foil and bake another 15-20 minutes until the top is golden and the potatoes are fork-tender when pierced through the center.
Slice the potatoes to a uniform thickness, ideally with a mandoline, so they cook evenly through every layer.
Pour the cream mixture in stages as you layer, not all at once at the end, so every layer gets properly saturated.
Test doneness by piercing through the center of the dish -- the edges cook faster than the middle.
Add thinly sliced onion between the potato layers for extra flavor.
Use half-and-half instead of heavy cream for a lighter version.
Top with breadcrumbs mixed with butter for an extra-crisp crust.
Refrigerate up to 4 days. Reheat covered in a 175°C (350°F) oven until warmed through, about 15-20 minutes, to avoid drying out the top.
Kartoffelgratin reflects the German tradition of baked potato dishes developed as hearty, warming food for colder regions, similar to French gratin dauphinois but typically featuring a stronger cheese presence.
Yes, assemble it a day ahead, refrigerate unbaked, and bake fresh, adding about 10 extra minutes since it will start cold.
They were likely sliced too thick, or the bake time needs extending -- test with a knife through the center, not just the edges.
Any good melting cheese works, such as Emmental or a sharp cheddar, though the flavor profile will shift slightly.
Per serving (277g / 9.8 oz) · 4 servings total
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