Mashed Potato Gratin With Garlic And Onions

Total Time: 2 hrs 30 mins Preparation Time: 20 mins Cook Time: 2 hrs 10 mins

Ingredients

• Servings: 6
• 4 large idaho potatoes
• 2 large garlic heads, roasted
• 2 large onions, baked
• 1 1/4 cups heavy cream
• salt and pepper
• 1 cup gruyere cheese

Recipe

• 1 remove the papery covering of the garlic heads, but do not peel and do not separate the cloves.
• 2 wrap well in foil and put them in the oven.
• 3 put the onions on a double sheet of foil, but do not wrap them; put them in the oven.
• 4 pierce the potatoes in several places with a thin skewer or the tines of a fork.
• 5 place them directly on the oven rack.
• 6 bake the garlic for one hour and the onions and the potatoes for an hour and a half at 425f degrees.
• 7 after an hour pull out the garlic heads, unwrap, and let cool for 5 minutes.
• 8 separate the cloves and squeeze them over a bowl so the softened garlic pops out into the bowl.
• 9 after 1 1/4 hours, pull out the onions and potatoes.
• 10 if the onions are not very soft (almost collapsed) put them back in for a few minutes.
• 11 perforate the potatoes lengthwise and crosswise with the tines of a fork and squeeze.
• 12 scoop the potato flesh into a bowl and mash it with a potato masher.
• 13 with a sharp knife, cut off the stem and root ends of the onions.
• 14 remove the skin and the first layer.
• 15 put the onions in a food processor and puree.
• 16 combine the potatoes, garlic, onion, 1/4 cup of cream, and salt and pepper in the bowl of a mixer.
• 17 beat (with the paddle blade) until smooth and blended, then scrape the mixture into a large gratin bowl.
• 18 sprinkle the top with cheese.
• 19 (the recipe can be made ahead to this point and kept in the refrigerator, covered, for a day or so. bring to room temperature before proceeding.) reduce the oven temperature to 350 degrees f.
• 20 pour the remaining cream over the mixture.
• 21 bake, uncovered, for 40-50 minutes , or until the top is browned and bubbly and the cream has cooked down to a very thick suace-like consistency.
• 22 try to arrange to have some leftovers; this is very good when it is cold.