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Potatoes Au Gratin with Creamy Jalapeno - This easy to make yet elegant side dish is the perfect potato recipe for any party or celebration. A Crowd pleaser
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Potatoes Au Gratin with Creamy Jalapeño Sauce

Creamy, cheesy potatoes au gratin made with a flavorful jalapeño sauce. Rich, comforting, and perfect for holidays or dinner parties.
Course Side Dish
Cuisine French
Keyword casseroles, cheesy potatoes, creamy potato casserole, entertaining, jalapeño potatoes, potato casserole, potatoes au gratin, side dishes
Prep Time 20 minutes
Cook Time 1 hour 15 minutes
Total Time 1 hour 35 minutes
Servings 8 servings
Calories 353kcal
Author Tiffany Bendayan

Ingredients

For Jalapeño Sauce

  • 1 large onion sliced
  • 2 tablespoons butter
  • 1/4 cup pickled jalapeños
  • 1 –2 tablespoons jalapeño juice from jar
  • 2 cups heavy cream
  • Salt and pepper to taste

For Gratin

  • 2 pounds potatoes Yukon Gold or Russet, peeled and thinly sliced
  • 1 1/2 cups shredded cheese cheddar or mozzarella
  • 2 tablespoons grated Parmesan cheese
  • Salt and pepper to taste

Instructions

  • Preheat oven to 350°F.
  • In a large skillet, melt the butter over medium heat. Add the onions and cook until soft and translucent.
  • Add the chopped jalapeños and jalapeño juice. Cook for 1–2 minutes.
  • Pour in the heavy cream and simmer on low heat for about 5–7 minutes, until slightly thickened. Season with salt and pepper.
  • Slice the potatoes thinly (about 1/8 inch thick) for even cooking.
  • Lightly grease a baking dish. Arrange a layer of potatoes, slightly overlapping.
  • Season lightly with salt and pepper. Pour some of the jalapeño sauce over the potatoes and sprinkle with cheese.
  • Repeat the layers until all ingredients are used, finishing with cheese and Parmesan on top.
  • Cover with foil and bake for 50–60 minutes, or until the potatoes are fork-tender.
  • Remove foil and broil for 2–3 minutes until the top is golden and bubbly.
  • Let rest for 10 minutes before serving.

Notes

  • Slice potatoes evenly, about 1/8 inch thick, to ensure they cook through properly.
  • The sauce should slightly thicken before layering; it will continue thickening in the oven.
  • If potatoes are still firm, cover and bake longer until fork tender.
  • Use more jalapeños for extra heat or fewer for a milder flavor.
  • Let the dish rest before serving so the sauce sets and thickens.

Nutrition

Calories: 353kcal | Carbohydrates: 14g | Protein: 7g | Fat: 30g | Saturated Fat: 18g | Cholesterol: 106mg | Sodium: 636mg | Potassium: 352mg | Fiber: 1g | Sugar: 1g | Vitamin A: 1555IU | Vitamin C: 7mg | Calcium: 175mg | Iron: 1.1mg
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