Best Ever Caramelized Onion Mashed Potatoes

Name: Best Ever Caramelized Onion Mashed Potatoes
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 pounds of russet potatoes, peeled and cut into chunks; 1/2 cup of milk, warmed; 1/4 cup of unsalted butter; Salt and pepper to taste; 2 large onions, thinly sliced; 2 tablespoons of olive oil; 1 tablespoon of balsamic vinegar; Salt to taste

Highlighted under: Comfort Food

Indulge in the creamy richness of the Best Ever Caramelized Onion Mashed Potatoes, where buttery mashed potatoes meet the sweet, deep flavor of perfectly caramelized onions.

Created by

Lucy Bennett

Last updated on 2025-12-11T12:42:44.455Z

These mashed potatoes are not just any side dish; they're a comforting blend of creamy potatoes and the sweet, savory notes of caramelized onions. Perfect for family dinners or holiday feasts!

        Why You'll Love This Recipe
        Rich, savory flavor from the caramelized onions
Creamy texture that pairs beautifully with any main dish
A comforting classic that elevates your mashed potato game

      

The Perfect Side Dish for Any Occasion

These Best Ever Caramelized Onion Mashed Potatoes are not just a side dish; they are a culinary experience that resonates with comfort and warmth. Whether you're hosting a holiday dinner, a casual gathering, or simply enjoying a family meal, these mashed potatoes will impress your guests. The depth of flavor from the caramelized onions elevates this dish, making it a standout choice that pairs beautifully with roasted meats, grilled vegetables, or even a hearty vegetarian main course.

The combination of creamy mashed potatoes and sweet, caramelized onions creates a harmonious balance that tantalizes the taste buds. Each bite offers a delightful contrast of textures, from the smoothness of the potatoes to the tender, slightly chewy onions. This recipe is designed to be versatile; feel free to experiment by adding herbs or cheeses to customize it to your liking. You'll find that no matter how you serve it, these mashed potatoes will quickly become a favorite.

Why Caramelized Onions Make a Difference

Caramelized onions are a culinary gem, transforming ordinary dishes into extraordinary ones. The slow cooking process brings out the natural sugars in the onions, resulting in a sweet and savory flavor profile that is unmatched. By incorporating caramelized onions into mashed potatoes, you introduce a layer of complexity that enhances the overall taste. This simple addition can turn a traditional recipe into a gourmet delight, making each serving a memorable experience.

Moreover, caramelized onions are incredibly versatile. They can be used in various dishes, from soups to sandwiches, but their pairing with mashed potatoes is particularly special. The richness of the potatoes complements the sweet notes of the onions, creating a comforting dish that satisfies the soul. This recipe not only showcases the beauty of caramelized onions but also demonstrates how a few simple ingredients can create something truly exceptional.

Tips for Perfect Mashed Potatoes

To achieve the perfect mashed potatoes, start with the right type of potatoes. Russet potatoes are ideal due to their starchy texture, which results in a creamy finish. Be sure to peel and cut them into uniform chunks for even cooking. When boiling, always start with cold water and add a pinch of salt; this ensures the potatoes absorb flavor as they cook. The goal is to cook them until they are fork-tender, which usually takes about 15-20 minutes.

Another key to creamy mashed potatoes is the incorporation of warm milk and butter. Adding them while the potatoes are still hot helps to create a smooth and fluffy texture. Use a potato masher or a ricer for the best results, as they prevent the potatoes from becoming gummy. Finally, don’t forget to season generously with salt and pepper; this step is crucial in enhancing the flavors of your dish.

Ingredients

For the Mashed Potatoes

2 pounds of russet potatoes, peeled and cut into chunks
1/2 cup of milk, warmed
1/4 cup of unsalted butter
Salt and pepper to taste

For the Caramelized Onions

2 large onions, thinly sliced
2 tablespoons of olive oil
1 tablespoon of balsamic vinegar
Salt to taste

Mix well and serve warm!

Instructions

Caramelize the Onions

In a large skillet, heat olive oil over medium heat. Add the sliced onions and a pinch of salt. Cook, stirring frequently, for about 20 minutes or until the onions are golden brown and caramelized.

Add balsamic vinegar and cook for another 2 minutes. Remove from heat and set aside.

Prepare the Potatoes

In a large pot, cover the potato chunks with cold water and add a pinch of salt. Bring to a boil and cook for 15-20 minutes, or until the potatoes are tender. Drain well.

Mash and Combine

Return the drained potatoes to the pot. Add warmed milk and butter, then mash until smooth. Fold in the caramelized onions, seasoning with salt and pepper to taste.

Enjoy your delicious mashed potatoes!

Storing and Reheating

If you find yourself with leftovers, you can store these delicious mashed potatoes in an airtight container in the refrigerator for up to three days. To maintain their creamy texture, reheat them gently on the stovetop over low heat, adding a splash of milk to restore the consistency. Stir frequently to prevent sticking and ensure even heating.

For longer storage, consider freezing the mashed potatoes. Simply portion them into freezer-safe containers, leaving space for expansion, and freeze for up to three months. When ready to enjoy, thaw overnight in the refrigerator and reheat using the stovetop method for the best results. This way, you can savor the flavors of caramelized onion mashed potatoes even on the busiest of days.

Serving Suggestions

These Best Ever Caramelized Onion Mashed Potatoes make a fantastic side dish for a variety of main courses. Serve them alongside roasted chicken or beef for a classic pairing. They also complement grilled salmon beautifully, adding a rich, savory element to the meal. If you're vegetarian, consider serving them with a hearty mushroom dish or a roasted vegetable medley to create a balanced and satisfying plate.

For a touch of elegance, top the mashed potatoes with a sprinkle of fresh herbs such as chives or parsley before serving. This not only enhances the flavor but also adds a pop of color to your dish. You can also experiment with different cheeses, such as Parmesan or cheddar, to create a cheesy variation. The possibilities are endless, making this recipe a staple in your kitchen.

Questions About Recipes

→ Can I use other types of potatoes?

Yes, Yukon Gold potatoes are a great alternative for a creamier texture.

→ Can I prepare the onions in advance?

Absolutely! Caramelized onions can be made a day ahead and stored in the fridge.

→ How can I make this dish vegan?

You can substitute butter with vegan butter and use plant-based milk.

→ What can I serve these mashed potatoes with?

They pair wonderfully with roasted meats, grilled vegetables, or as a side for Thanksgiving dinner.