horseradish mashed potatoes with caramelized onion
A yummy side dish that can be made ahead.
prep time
20 Min
cook time
1 Hr
method
Bake
yield
6 serving(s)
Ingredients
- 1/4 cup butter
- 6 tablespoons butter
- 2 1/4 pounds white onions, thinly sliced
- 3 tablespoons balsamic vinegar
- 2 teaspoons fresh thyme, chopped
- 3 1/2 pounds russet potatoes, peeled, cut into 1-inch pieces
- 7 tablespoons whole milk
- 1/4 cup prepared horseradish
How To Make horseradish mashed potatoes with caramelized onion
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Step 1Melt 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.
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Step 2Meanwhile, 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.
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Step 3Transfer 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.
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