Best Ever Caramelized Onion Mashed Potatoes
There is something truly special about the Best Ever Caramelized Onion Mashed Potatoes. This dish elevates your typical mashed potatoes into a rich, flavorful side that is perfect for any occasion, from family dinners to holiday feasts. The creamy texture combined with the sweetness of caramelized onions makes these potatoes unforgettable. They are not just delicious; they are also versatile enough to complement a variety of main dishes.
Why You’ll Love This Recipe
- Elevated Flavor: The combination of caramelized onions and herbs adds depth and richness.
- Creamy Texture: Using Yukon Gold potatoes ensures a smooth and creamy finish.
- Versatile Side Dish: Perfect for holidays, gatherings, or a comforting weeknight meal.
- Easy Preparation: Simple steps make this recipe approachable for cooks of all levels.
- Herb-Infused Goodness: Fresh herbs like chives, thyme, and sage enhance the overall taste.
Tools and Preparation
To create these delicious mashed potatoes, you’ll need a few essential tools. Having the right equipment makes preparation easier and more enjoyable.
Essential Tools and Equipment
- Skillet
- Potato peeler (optional)
- Large pot
- Potato masher or ricer
- Mixing bowl
Importance of Each Tool
- Skillet: Ideal for caramelizing onions evenly without burning them.
- Potato masher or ricer: Ensures smooth and lump-free mashed potatoes for the perfect texture.

Ingredients
For the Caramelized Onions
- 2 Tablespoons Olive Oil
- 4 Yellow Onions (sliced thin and evenly)
For the Mashed Potatoes
- 2 Pounds Yukon Gold Potatoes (washed)
- 4 Tablespoons Salted Butter (you can use non-dairy butter, if preferred)
- 3/4 Cup Half & Half or Full-Fat Coconut Milk or Dairy-Free Milk
- 1 Teaspoon Kosher Salt
For Flavoring
- 1 Cup Parmesan Cheese (freshly grated)
- 1 Bunch Chives (thinly chopped)
- 2 Sprigs Fresh Thyme (stems removed)
- 3 Leaves Fresh Sage (chopped)
How to Make Best Ever Caramelized Onion Mashed Potatoes
Step 1: Prepare the Onions
To make these mashed potatoes, start by preparing the onions. Peel the skin from the onions and thinly slice them. It will look like a lot of onions, but that is okay!
Step 2: Caramelize the Onions
- Once the onions are done, set them aside.
- Heat a skillet over medium heat and add in the olive oil.
- When the oil is hot, add in the onions.
- Stir occasionally until they are browned and caramelized; this will take approximately 40-50 minutes.
Step 3: Cook the Potatoes
While the onions are cooking:
1. Wash the potatoes thoroughly and chop them into small pieces (peeling is optional).
2. Heat a pot of water on the stove.
3. Once boiling, add in the chopped potatoes and cook for 20 minutes until fork-tender.
Step 4: Mash the Potatoes
- Drain water from the pot once cooked.
- Mash the potatoes until smooth.
Step 5: Combine Ingredients
- Add in butter, kosher salt, and half & half (or coconut milk) to the potatoes.
- Mash again until fully combined.
- Remove half of the caramelized onions from heat and stir into the mashed potatoes along with grated parmesan cheese.
Step 6: Serve
Finally, transfer mashed potatoes to a large bowl:
1. Top with remaining caramelized onions, chopped chives, thyme, sage, and melted butter.
2. Serve warm and enjoy!
How to Serve Best Ever Caramelized Onion Mashed Potatoes
Best Ever Caramelized Onion Mashed Potatoes are a delightful side dish that brings comfort and flavor to any meal. Here are some serving suggestions that will elevate your dining experience.
With Grilled Chicken
- Pair these mashed potatoes with juicy grilled chicken breast for a satisfying and balanced meal.
Alongside Roasted Vegetables
- Serve with a medley of roasted vegetables to add color and nutrients to your plate.
Topped with Extra Herbs
- Garnish the mashed potatoes with additional fresh herbs like parsley or dill for a burst of freshness.
As a Base for Savory Sauces
- Use the creamy mashed potatoes as a base for rich sauces, such as mushroom or garlic gravy, to enhance their flavor.
With Fresh Salad
- A crisp salad on the side complements the creaminess of the mashed potatoes perfectly, adding texture and freshness.
For Holiday Gatherings
- These mashed potatoes make a great addition to your Thanksgiving or holiday dinner, offering a comforting option for guests.
How to Perfect Best Ever Caramelized Onion Mashed Potatoes
To achieve the ultimate creamy texture and flavor in your Best Ever Caramelized Onion Mashed Potatoes, consider these tips:
-
Use Yukon Gold Potatoes: They have a naturally buttery flavor and creamy texture that works perfectly in mashed potatoes.
-
Don’t Rush the Onions: Take your time caramelizing the onions; this enhances their sweetness and adds depth to the dish.
-
Mash While Warm: Mash the potatoes while they are still warm for a smoother consistency. Cold potatoes can become gummy when mashed.
-
Experiment with Dairy Alternatives: If you’re looking for a dairy-free option, coconut milk or non-dairy butter can be used without compromising flavor.
-
Add More Cheese: For an extra cheesy twist, feel free to add more parmesan cheese or try different varieties like cheddar or gouda.
-
Taste and Adjust Seasoning: Always taste before serving; adjusting salt and pepper can make all the difference in elevating flavors.
Best Side Dishes for Best Ever Caramelized Onion Mashed Potatoes
These mashed potatoes pair wonderfully with a variety of side dishes. Here are some great options to consider:
-
Grilled Lemon Herb Chicken: Lightly seasoned chicken grilled to perfection provides a zesty contrast to the creamy potatoes.
-
Honey Glazed Carrots: Sweet and tender carrots add a pop of color and sweetness that complements the savory flavors of the mash.
-
Garlic Roasted Broccoli: The nutty flavor of roasted broccoli pairs beautifully with the richness of caramelized onion mashed potatoes.
-
Stuffed Bell Peppers: Colorful bell peppers filled with rice, beans, and spices create a hearty pairing that balances well with smooth potatoes.
-
Balsamic Brussels Sprouts: The tangy sweetness of balsamic-glazed Brussels sprouts enhances the dish’s overall flavor profile.
-
Herb-Crusted Salmon: A flaky salmon fillet topped with herbs adds protein and pairs nicely with creamy textures.
-
Spinach Salad with Avocado: A fresh spinach salad topped with creamy avocado provides crunch and healthy fats to your meal.
-
Roasted Sweet Potatoes: For an added touch of sweetness, roasted sweet potatoes can bring variety while still being comforting.
Common Mistakes to Avoid
Making the Best Ever Caramelized Onion Mashed Potatoes can be easy, but avoiding common mistakes will elevate your dish. Here are some pitfalls to watch out for:
-
Using the wrong potatoes: Opt for Yukon Gold potatoes for their creamy texture. Avoid starchier varieties like Russets, which can lead to gluey mashed potatoes.
-
Rushing the caramelization: Patience is key when caramelizing onions. Cooking them too quickly on high heat can burn rather than brown them, so keep it at medium heat and stir occasionally.
-
Ignoring seasoning: Salt is essential for flavor. Make sure to season both the water for boiling potatoes and the mashed mixture to ensure every bite is delicious.
-
Not mashing properly: Over-mashing can make your potatoes gummy. Use a potato masher or ricer until just smooth; avoid using a food processor.
-
Skipping fresh herbs: Fresh chives, thyme, and sage add depth of flavor. Don’t skip these key ingredients as they enhance the overall taste of your dish.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container.
- Best consumed within 3-5 days for optimal flavor and freshness.
Freezing Best Ever Caramelized Onion Mashed Potatoes
- Freeze in portioned airtight containers or freezer bags.
- Can be frozen for up to 2 months; remember to label with date.
Reheating Best Ever Caramelized Onion Mashed Potatoes
- Oven: Preheat to 350°F (175°C) and cover with foil. Heat for about 20-30 minutes until warmed through.
- Microwave: Place in a microwave-safe dish, cover loosely, and heat in intervals of 1-2 minutes until hot.
- Stovetop: Heat in a saucepan over medium-low heat. Stir occasionally, adding a splash of broth or milk if needed to restore creaminess.
Frequently Asked Questions
Here are some common questions about the Best Ever Caramelized Onion Mashed Potatoes that you might find helpful:
Can I use non-dairy butter?
Yes! You can substitute regular butter with non-dairy butter for a dairy-free option without compromising taste.
How do I make my mashed potatoes creamier?
Adding more half & half or coconut milk will give your mashed potatoes an extra creamy texture. Adjust based on your preference!
What can I use instead of parmesan cheese?
If you’re looking for a dairy-free alternative, nutritional yeast provides a cheesy flavor without using cheese.
How do I prevent my onions from burning during caramelization?
Cook the onions on medium heat and stir them frequently. This helps achieve that perfect golden brown without burning.
Final Thoughts
The Best Ever Caramelized Onion Mashed Potatoes are not only creamy and delicious but also versatile enough for any occasion. Customize them by adding different herbs or spices to match your taste preferences! Give this recipe a try for your next meal or gathering; you won’t be disappointed!
Best Ever Caramelized Onion Mashed Potatoes
Indulge in the creamy delight of Best Ever Caramelized Onion Mashed Potatoes, where comfort food meets gourmet flair. This recipe transforms classic mashed potatoes into a rich, flavorful side dish that’s perfect for any occasion—from cozy family dinners to festive holiday feasts. The luxurious texture of Yukon Gold potatoes melds beautifully with the sweet caramelized onions and fresh herbs, creating a memorable dish that complements a variety of main courses. Easy to prepare and versatile, these mashed potatoes are sure to impress your guests and become a staple at your table.
- Prep Time: 15 minutes
- Cook Time: 1 hour
- Total Time: 1 hour 15 minutes
- Yield: Approximately 8 servings 1x
- Category: Side Dish
- Method: Boiling/Sautéing
- Cuisine: American
Ingredients
- 2 pounds Yukon Gold potatoes
- 4 yellow onions
- 2 tablespoons olive oil
- 4 tablespoons salted butter (or non-dairy butter)
- 3/4 cup half & half (or full-fat coconut milk)
- 1 cup parmesan cheese (freshly grated)
- Fresh herbs: chives, thyme, and sage
Instructions
- Prepare the onions by slicing them thinly.
- In a skillet over medium heat, heat olive oil and add the sliced onions. Cook for 40-50 minutes until caramelized.
- Meanwhile, wash and chop the potatoes (peeling is optional) and boil in salted water for about 20 minutes until fork-tender.
- Drain the cooked potatoes and mash until smooth.
- Mix in butter, half & half (or coconut milk), and salt until combined.
- Stir in half of the caramelized onions and grated parmesan cheese.
- Serve topped with remaining caramelized onions and fresh herbs.
Nutrition
- Serving Size: 1 cup (approximately 240g)
- Calories: 280
- Sugar: 2g
- Sodium: 350mg
- Fat: 10g
- Saturated Fat: 5g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 41g
- Fiber: 4g
- Protein: 6g
- Cholesterol: 20mg
