Preparation

做填充

• In a large skillet over medium heat, cook the sausage and onion, breaking up the sausage, until browned, 4 to 5 minutes. Add the garlic and cook, 1 minute. Season to taste with pepper.

Make the pie

• In a large saucepan, cover the potatoes by 1 inch with well-salted water. Bring to a boil over high heat, then lower to a simmer. Cook the potatoes until tender, about 15 minutes. Meanwhile, coat the bottom and sides of a 9-inch springform pan with 1 Tbs. of the butter, then cover evenly with 1/4 cup of the panko.
• Position a rack in the center of the oven, and heat the oven to 400°F.
• Drain the potatoes well, and return them to the pot to steam, about 2 minutes. Add 2 Tbs. of the butter, the cream, eggs, Parmigiano, 1-1/2 tsp. salt, and 1/4 tsp. pepper, and mash thoroughly.
• Spread half of the mashed potatoes evenly in the prepared pan. Cover with 1 cup of the provolone, followed by the sausage and the remaining provolone. Top with the remaining potatoes, and smooth the top with a silicone spatula.
• 将表面撒上剩余的1/4杯panko，然后将其剩余的1 TBS撒上。黄油。烘烤，直到顶部是金棕色，并且中心非常热，大约45分钟。让冷却5分钟，然后在边缘绕着削皮刀释放锅。切成楔子，如果愿意，请与绿色沙拉一起食用。