German Kartoffelgratin (Potato Gratin with Lemon Cream)

About This Recipe

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.

Ingredients

Serves 4

• 1 kgstarchy potatoes(peeled, thinly sliced)
• 1 cupheavy cream
• 0.5 cupplain yogurt
• 1lemon(zested)
• 2 clovesgarlic(minced)
• 1 cupgrated Gruyere cheese
• 0.5 tspnutmeg
• 1 tspsalt
• 0.5 tspblack pepper
• 1 tbspbutter(for greasing)

Instructions

1. 1

   Preheat the oven

   Preheat oven to 175°C (350°F). Grease a baking dish with butter.

2. 2

   Make the cream mixture

   Whisk together heavy cream, yogurt, lemon zest, garlic, nutmeg, salt, and pepper.

3. 3

   Layer the potatoes

   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.

4. 4

   Top with cheese

   Pour any remaining cream over the top layer and finish with the remaining cheese.

5. 5

   Bake covered

   Cover with foil and bake 30 minutes.

6. 6

   Bake uncovered

   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.

Variations

• •

  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.

Storage

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.

Frequently Asked Questions