French Onion Mashed Potatoes combine two beloved comfort foods—creamy mashed potatoes and the savory flavor of French onion soup. The result is a rich, buttery, and flavorful side dish that pairs perfectly with roasted meats, grilled chicken, or even as a holiday dinner staple. This recipe takes classic mashed potatoes to the next level with caramelized onions and melted cheese mixed right in.
Ingredients
For the Mashed Potatoes
- 3 lbs (1.4 kg) Yukon Gold potatoes, peeled and cubed
- 4 tbsp unsalted butter
- 1/2 cup (120 ml) whole milk or heavy cream
- 1/4 cup (60 ml) sour cream
- Salt and pepper to taste
For the French Onion Mix
- 2 large onions, thinly sliced
- 2 tbsp unsalted butter
- 1 tbsp olive oil
- 1 tsp sugar
- 1 tsp salt
- 1/4 cup (60 ml) beef broth
- 1/2 cup (50 g) shredded Gruyère cheese
Directions
Step 1: Cook the Potatoes
In a large pot, add the cubed potatoes and cover them with water. Bring to a boil over high heat and cook until the potatoes are fork-tender, about 15-20 minutes. Drain well.
Step 2: Caramelize the Onions
While the potatoes are cooking, heat the butter and olive oil in a large skillet over medium heat. Add the sliced onions, sugar, and salt. Cook, stirring occasionally, until the onions are golden brown and caramelized, about 20-25 minutes. Add the beef broth and cook for another 2 minutes until the liquid is absorbed. Remove from heat.
Step 3: Mash the Potatoes
Return the drained potatoes to the pot. Add the butter, milk, and sour cream. Mash the potatoes until smooth and creamy. Season with salt and pepper to taste.
Step 4: Combine
Gently fold the caramelized onions into the mashed potatoes. Sprinkle the shredded Gruyère cheese over the top and stir lightly until the cheese melts into the hot potatoes.
Step 5: Serve
Serve the French Onion Mashed Potatoes hot, garnished with a sprinkle of fresh thyme or parsley if desired.
Notes
- For an extra-cheesy version, add more Gruyère or top with shredded mozzarella and broil for a few minutes until bubbly and golden.
- Yukon Gold potatoes are preferred for their creamy texture, but Russet potatoes can also be used.
- If you prefer a deeper flavor, substitute the beef broth with a splash of red wine while caramelizing the onions.
Conclusion
These French Onion Mashed Potatoes are a rich and decadent twist on a classic dish, delivering the savory flavors of caramelized onions and melted cheese in every bite. Perfect for a holiday feast or a comforting weeknight meal, they’re sure to impress your family and guests alike!
