Baked Potato Gratin with Garlic and Thyme

By AislePrompt Editorial · ·

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are developed and reviewed.

A rich and creamy potato gratin featuring thinly sliced potatoes layered with garlic, thyme, and a golden cheese crust. This French-inspired quick recipe, ready in about 90 minutes, pairs russet potatoes, heavy cream, garlic for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 20 min Cook: 70 min Serves 6 French cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 375°F. Grease a 9x13-inch baking dish with 2 tbsp unsalted butter.
  2. Step 2: In a saucepan, combine 2 cups heavy cream, 4 minced garlic cloves, 2 tsp chopped fresh thyme, 1 1/2 tsp salt, and 1 tsp black pepper. Warm over medium heat until just simmering, then remove from heat.
  3. Step 3: Arrange a layer of thinly sliced potatoes (about one-third) evenly in the prepared dish. Pour one-third of the warm cream mixture over the potatoes, then sprinkle with 1/2 cup shredded gruyere cheese.
  4. Step 4: Repeat layering two more times with potatoes, cream, and cheese, finishing with a cheese layer on top.
  5. Step 5: Cover the dish with foil and bake for 50 minutes. Remove foil and bake for an additional 20 minutes until the top is golden brown and the potatoes are tender when pierced with a fork.
  6. Step 6: Let the gratin rest for 10 minutes before serving to allow it to set.

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