HORSERADISH MASHED POTATOES WITH CARAMELIZED ONIONS

Horseradish Mashed Potatoes With Caramelized Onions image

Provided by lazyme

Categories Potato

Time 1h20m

Yield 6 serving(s)

Number Of Ingredients 8

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1/4 cup butter
2 1/4 lbs white onions, thinly sliced
3 tablespoons balsamic vinegar
2 teaspoons fresh thyme, chopped
3 1/2 lbs russet potatoes, peeled, cut into 1-inch pieces
7 tablespoons whole milk
1/4 cup prepared horseradish
6 tablespoons butter

Steps:

Melt 1/4 cup butter in large skillet over medium heat. Add onions; saute until deep golden, about 30 minutes. Add vinegar and thyme. Reduce heat to low; saute 4 minutes. Season with salt and paper.
Meanwhile, cook potatoes in large pot of boiling salted water until very tender, about 20 minutes. Drain. Return to same pot; mash until smooth. Add 6 tablespoons milk, horseradish and 6 tablespoons butter; stir to blend. Thin with 2 tablespoons milk if necessary. Add 1 to 2 tablespoons more butter if necessary. Season with salt and pepper.
Transfer potatoes to serving dish. Spoon onion mixture atop potatoes. (Can be prepared 8 hours ahead. Cover with foil and refrigerate. Rewarm in 350ºF oven about 30 minutes). Serve hot.

Nutrition Facts : Calories 460.8, Fat 20.2, SaturatedFat 12.6, Cholesterol 52.6, Sodium 195.7, Carbohydrate 65.5, Fiber 8.6, Sugar 11.1, Protein 7.8