Potato Kugel Gratin Recipe - (4.1/5)

Ingredients

• 4 teaspoons coarse salt, plus 1/4 teaspoon, divided
• 1 teaspoon freshly ground pepper, plus 1/4 teaspoon, divided
• 1/2 cup extra-virgin olive oil, plus more for greasing baking dish
• 3 1/2 pounds russet potatoes, peeled, about 6 large potatoes
• 5 shallots, thinly sliced, about 9-ounces
• 3 tablespoons fresh thyme leaves, plus more for garnish
• 5 large eggs, room temperature
• 1 1/4 cups chicken broth or vegetable broth
• 1 cup unsalted matzo meal
• flaky sea salt, such as Maldon, to taste, for serving