Caramelized Onion Mashed Potatoes

No holiday dinner is complete without mashed potatoes, a crowd favorite. Your guests will love this modern update on a holiday classic.

Ingredients

• 2 tablespoons olive oil
• 3 large onions, thinly sliced
• 2 tablespoons water
• 2 tablespoons balsamic vinegar
• Dash of salt

• 2 pounds Yukon Gold or Russet potatoes, peeled and cut into large chunks
• 2/3 cup whole milk
• 2 tablespoons butter
• Salt and pepper to taste

How to make it  

• 1

  In large skillet, heat olive oil over medium-high heat.
  
• 2

  Add onions and let stand for about 5 minutes. Cook for 15 minutes more, stirring until golden brown. Toss well.
• 3

  Add water and balsamic vinegar, stirring well. Continue cooking until completely reduced and deep golden brown. Remove from heat and cover until ready for use.
• 4

  While onions are cooking, place potatoes in large pot and cover with cold water with a dash of salt.
  
• 5

  Bring to a boil over high heat. Reduce heat to medium and cook until fork tender, about 15 minutes.
  
• 6

  Drain completely and return to pot. Mash potatoes and add milk, butter, and salt and pepper to taste.
  
• 7

  Stir in caramelized onions. Keep warm until ready to serve.