Three-Potato Gratin

Prep: 15 min Cook: 90 min Serves: 12 Cuisine: American

A rich and creamy three-potato gratin featuring yams and Idaho potatoes, infused with thyme and Dijon mustard, perfect for comforting family dinners or special occasions.

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Ingredients

  • 1 Tbsp. butter
  • 2 1/2 c. heavy cream
  • 1/4 c. Dijon mustard
  • 1 1/2 tsp. cornstarch
  • 1 tsp. salt
  • 1/2 tsp. pepper
  • 1 1/4 lb. yams, peeled and thinly sliced
  • 1 1/4 lb. Idaho potatoes, peeled and thinly sliced

Instructions

  1. Preheat oven to 325°F.
  2. Grease a 3-quart shallow baking dish with butter.
  3. In a bowl, mix heavy cream, Dijon mustard, cornstarch, salt, and pepper.
  4. Add sliced yams and Idaho potatoes; toss to coat.
  5. Pour the mixture into the prepared dish.
  6. Cover and bake for 1 hour.
  7. Uncover and bake for an additional 30 minutes or until potatoes are tender and golden.
  8. Let sit for 10 minutes before serving.
  9. Sprinkle with crumbled fresh thyme leaves.

Nutrition & Diet Analysis (per serving)

452 kcal 23% DV
Protein Fat Carbs

Macronutrients

Protein 3.5g 7% DV
Total Fat 35.4g 45% DV
Carbs 32.4g 12% DV
Fiber 5.6g 20% DV
Sugar 1.5g 3% DV

Electrolytes

Sodium 9980mg 100% DV
Potassium 280.8mg 6% DV
Cholesterol 103.3mg 34% DV

Vitamins & Minerals

Vitamin A 167.8mcg 19% DV
Vitamin C 60.9mg 68% DV
Vitamin D 0.4mcg 2% DV
Calcium 143.5mg 11% DV
Iron 5.1mg 28% DV

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

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