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5.0 from 9 votes

Creamy Scalloped Au Gratin Potatoes

Creamy Scalloped Au Gratin Potatoes are so cheesy and flavorful! And make a wonderful side-dish for Thanksgiving, Easter, Christmas, or any night you're craving comfort food.

Prep Time
20 mins
Cook Time
20 mins
Additional Time
10 mins
Total Time
1 hr 15 mins
Servings: 8 servings
Course: Side Dish
Cuisine: American

Ingredients

  • 2 Tablespoons (28g) unsalted butter
  • 3 shallots peeled and finely chopped
  • 2 cloves garlic minced
  • 1 teaspoon fresh thyme leaves finely chopped
  • 1/4 teaspoon ground nutmeg
  • 1/4 teaspoon cayenne pepper
  • 1 teaspoon Dijon mustard
  • 1 and 1/2 cups (340ml) heavy whipping cream
  • 1/2 cup (113ml) chicken bone broth
  • 1 and 1/2 teaspoons salt
  • 1/2 teaspoon black pepper
  • 2 pounds (908g) Russet potatoes peeled and cut into 1/8-inch slices
  • 1/2 cup shredded fontina cheese
  • 1/2 cup shredded gruyere cheese
  • 1/4 cup finely grated Parmesan cheese

Instructions

    Cup of Yum
  1. Preheat the oven to 400 degrees (F). 
  2. Melt the butter in a large pot or dutch oven over medium-high heat. Add the shallots and sauté until softened and begin to caramelize, about 10 minutes. 
  3. Add the garlic and thyme and continue cooking for another minute, or until fragrant.
  4. Stir in the cream, broth, salt, black pepper, nutmeg, cayenne pepper, and dijon mustard and cook for 2 minutes, stirring almost constantly. 
  5. Add in the potatoes and bring to a simmer. Continue cooking until the potatoes are just fork-tender, about 10 minutes. 
  6. As neatly as possibly, scrape the potato mixture into a shallow 9x13-inch baking dish (or similar capacity). 
  7. Sprinkle the cheeses evenly over the potatoes, starting with the fontina, then adding the gruyere, and finishing with the parmesan. Bake until bubbling and golden brown, about 15 to 18 minutes. Sprinkle with a few thyme springs, if desired. 
  8. Let sit for 10 minutes before serving.