Best Ever Caramelized Onion Mashed Potatoes

Name: Best Ever Caramelized Onion Mashed Potatoes
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Yield: 4.0
Ingredients: 2 pounds potatoes, peeled and cut into chunks; 2 large onions, thinly sliced; 4 tablespoons butter; 1/2 cup milk; Salt and pepper to taste

Highlighted under: Comfort Food

Transform your side dish game with these Best Ever Caramelized Onion Mashed Potatoes! Creamy, buttery potatoes meld beautifully with sweet, rich caramelized onions for a flavor explosion that will have everyone coming back for seconds. This recipe is perfect for holidays, family dinners, or whenever you're craving a cozy comfort food classic.

Created by

Natalie Briggs

Last updated on 2025-12-11T09:44:43.988Z

The Perfect Comfort Food

Nothing says comfort quite like a warm bowl of mashed potatoes. When you add the sweet depth of caramelized onions, the experience becomes even more satisfying. These Best Ever Caramelized Onion Mashed Potatoes are ideal for family gatherings, holiday feasts, or even a cozy dinner at home. The creamy texture pairs wonderfully with your favorite entrees, making it a versatile choice for any meal.

With their rich flavor, these mashed potatoes bring an elevated twist to a classic dish that many love. Caramelizing the onions takes time, but the result is a sweet and savory blend that beautifully complements the creamy potatoes. Plus, the process is simple, allowing you to enjoy the comforting aroma wafting through your kitchen.

Choosing the Right Potatoes

The type of potatoes you choose can significantly impact the final texture and flavor of your mashed potatoes. Russet or Yukon Gold potatoes are popular choices due to their starchy nature, resulting in a fluffy and creamy mash. If you prefer a denser mash, consider using red potatoes, which have a waxy texture and hold their shape well.

Regardless of which type you select, ensure they are fresh and free from blemishes. For an added layer of flavor, consider roasting some garlic or adding herbs like thyme or rosemary while cooking the potatoes. These small touches can enhance the overall taste and elevate your dish to new heights.

Elevating Your Mashed Potatoes

Ingredients

Gather the following ingredients:

Ingredients

2 pounds potatoes, peeled and cut into chunks
2 large onions, thinly sliced
4 tablespoons butter
1/2 cup milk
Salt and pepper to taste

Make sure to have everything ready before starting the cooking process.

Instructions

Follow these steps to make your mashed potatoes:

Cook the Potatoes

Place the potatoes in a large pot, cover with water, and add a pinch of salt. Bring to a boil and cook until tender, about 20 minutes.

Caramelize the Onions

In a separate skillet, melt 2 tablespoons of butter over medium heat. Add the onions and cook slowly, stirring occasionally, until they are golden brown and sweet, about 25 minutes.

Mash the Potatoes

Drain the potatoes and return them to the pot. Add the remaining butter and milk. Mash until smooth and creamy.

Combine

Fold in the caramelized onions, mixing well. Season with salt and pepper to taste.

Your mashed potatoes are now ready to serve!

Storage Tips

If you have leftovers, store your caramelized onion mashed potatoes in an airtight container in the refrigerator. They can last for up to 3-4 days, making them a perfect option for meal prep or easy weeknight dinners. When reheating, consider adding a splash of milk to restore creaminess, as the potatoes can thicken in the fridge.

For longer storage, you can freeze the mashed potatoes. Place them in a freezer-safe container or bag, ensuring you remove as much air as possible to prevent freezer burn. They can keep well for up to 2 months. To reheat, thaw overnight in the fridge and warm gently on the stovetop or in the microwave, stirring occasionally.

Serving Suggestions

These Best Ever Caramelized Onion Mashed Potatoes pair beautifully with a variety of main courses. Consider serving them alongside roasted meats like turkey, chicken, or beef to create a comforting and substantial meal. They also complement hearty vegetarian dishes, making them a versatile side that fits any dietary preference.

For a complete dinner, add a green vegetable like steamed broccoli or sautéed green beans to your plate for color and nourishment. This enhances both the visual appeal and the balance of flavors on your dining table, ensuring that everyone leaves satisfied and happy.