Ramp and Potato Gratin with Gruyère

By AislePrompt Editorial · Published 2026-04-18 · Updated 2026-04-18

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 springtime celebration of tender potatoes layered with fresh ramps and a creamy cheese sauce, baked to golden perfection. This American-inspired vegetarian recipe, ready in about 90 minutes, pairs russet potatoes, ramps, heavy cream for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 calories and feeds 8, 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: 30 min Cook: 60 min Serves 8 American cuisine 350 cal/serving

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Ingredients

2 lbs, peeled and thinly sliced russet potatoes
1 bunch, trimmed and thinly sliced ramps
1 cup heavy cream
1/2 cup whole milk
1/4 cup, grated Gruyère cheese
1/4 cup, grated Parmesan cheese
2 tbsp unsalted butter
2 cloves, minced garlic
1/2 tsp salt
1/4 tsp black pepper
1/4 tsp dried thyme

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Instructions

Step 1: Preheat oven to 375°F (190°C) and butter a 9x13-inch baking dish.
Step 2: Melt 2 tbsp butter in a medium saucepan over medium heat, add minced garlic, and sauté for 1 minute until fragrant.
Step 3: Whisk in heavy cream, whole milk, salt, black pepper, and dried thyme, then simmer for 5 minutes until slightly thickened.
Step 4: Stir in 1/4 cup grated Gruyère and 1/4 cup grated Parmesan until fully melted and smooth, then remove from heat.
Step 5: Layer half of the sliced potatoes in the baking dish, sprinkle with half of the sliced ramps, then pour half of the cheese sauce over the top.
Step 6: Repeat layers with remaining potatoes, ramps, and cheese sauce, ensuring the top is covered.
Step 7: Cover with aluminum foil and bake for 45 minutes, then remove foil and bake uncovered for 15 minutes until golden and bubbly.