Caramelized Onion Mashed Potato Bake

Ingredients

• 2 tablespoons chopped fresh parsley
• 1 cup chopped caramelized onion
• 1 ¼ cups freshly grated Gruyère cheese
• 1 teaspoon salt
• ½ teaspoon pepper
• ¼ cup melted butter
• ½ cup warm milk
• + 3 more ingredients
• • 1 ¼ cups warm buttermilk
  • 2 teaspoons salt
  • 4 pounds baking potatoes

1. Peel potatoes; cut into 2-inch pieces. Bring potatoes, 2 tsp. salt, and water to cover to a boil in a large Dutch oven over medium-high heat; boil 20 minutes or until tender. Drain. Return potatoes to Dutch oven, reduce heat to low, and cook, stirring occasionally, 3 to 5 minutes or until pota...

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