Vegan Caramelized Onion Mashed Potatoes

The sweet, savory, and deeply caramelized flavors of these Vegan Caramelized Onion Mashed Potatoes make them the perfect cozy side dish for any comforting meal.

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When the holidays roll around, or honestly, any chilly evening, it usually marks the start of “mashed potato season” in our house. Here, that doesn’t just mean basic potatoes and butter; it’s an excuse to invite family or friends over, fill the kitchen with the scent of slowly browning onions, and serve up something that feels a little extra special without much extra work. Our cold-weather months seem to stretch on forever, and we’ll happily use any reason to keep putting this favorite on the table.

I’m sure we can all agree that mashed potatoes somehow just make every meal better. Maybe it’s the simplicity of a big bowl you can pile onto your plate, or the way that silky, garlicky mash pairs so well with everything else. These vegan caramelized onion mashed potatoes are every bit as indulgent as they sound: sweet, golden onions folded into rich, creamy potatoes with a subtle hint of garlic and herbs. Basically, I still wanted to use humble, everyday ingredients, but with that extra caramelized, “wow” factor that makes them stand out at both weeknight dinners and special occasions.

Why You’ll Love This Recipe

This version of mashed potatoes is far from ordinary. Caramelized onions bring sweetness and depth, while the vegan butter and coconut milk keep it silky and creamy.

Rich and creamy: The coconut milk and vegan butter make each spoonful indulgent and velvety.

Sweet and savory: Caramelized onions add a natural sweetness that balances the garlic and seasoning.

Easy to prepare: Simple steps and pantry-friendly ingredients mean minimal fuss.

Vegan-friendly: Fully plant-based without compromising on taste or texture.

Versatile: Works as a side for dinners, holiday spreads, or casual family meals.

Impressively flavorful: The layered onion and herb flavors make it feel gourmet.

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Ingredients

For the Mashed Potatoes:

• 6 medium peeled potatoes, chopped into even pieces
  
• 6 tablespoons vegan butter
  
• 2 tablespoons full-fat coconut milk
  
• 1 teaspoon garlic powder
  
• Salt & pepper to taste
  
• Fresh thyme for garnish (optional)
  

For the Caramelized Onions:

• 1 large yellow onion, thinly sliced
  
• 2 tablespoons vegan butter or neutral oil
  
• Salt & pepper to taste
  

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Step-by-Step Instructions

1. Prepare the Potatoes

Place the chopped potatoes in a large pot and cover with water. Add a pinch of salt and bring to a boil. Reduce heat and simmer until tender, about 15–20 minutes. Test with a fork to ensure they’re soft but not falling apart.

2. Caramelize the Onions

While the potatoes cook, heat vegan butter or oil in a skillet over medium-low heat. Add the sliced onions, a pinch of salt, and cook slowly, stirring occasionally, for 20–25 minutes until golden brown and sweet. Avoid high heat to prevent burning.

3. Mash the Potatoes

Drain the cooked potatoes and return them to the pot. Add vegan butter, coconut milk, garlic powder, salt, and pepper. Mash with a potato masher or hand mixer until smooth and creamy. Adjust seasoning as needed.

4. Fold in Caramelized Onions

Gently fold the caramelized onions into the mashed potatoes, distributing them evenly. Reserve a few onions to sprinkle on top for presentation.

5. Serve Warm

Transfer to a serving bowl and garnish with fresh thyme if desired. Serve immediately while hot, alongside roasted vegetables, gravy, or a hearty main dish.

Tips & Variations

• Extra creamy: Add an additional tablespoon of coconut milk while mashing.
• Garlic flavor: Roast a few garlic cloves with the potatoes for a richer taste.
• Herb twist: Mix in rosemary or sage for a savory, aromatic note.
• Make ahead: Mashed potatoes can be prepared a day ahead; reheat gently with extra coconut milk to restore creaminess.
• Caramelization shortcut: Slice onions thinly and sprinkle with a pinch of sugar to speed up browning slightly.

Serving Suggestions

Vegan Caramelized Onion Mashed Potatoes are perfect for holiday feasts, cozy weeknight dinners, or any meal where comfort food is needed. Serve with roasted vegetables, vegan gravy, or baked tofu for a complete meal.

For casual dinners, I like to plate it alongside a simple lentil loaf or vegan meatballs. The sweet, buttery flavor pairs with anything savory and makes the meal feel extra special.

Frequently Asked Questions

Can I use regular milk instead of coconut milk?

Yes, any plant-based milk works. For richer flavor, use full-fat varieties.

How do I keep potatoes from being lumpy?

Mash immediately after draining and use a hand mixer or potato masher, adding liquid gradually for smoothness.

Can I make them ahead of time?

Yes. Store in an airtight container in the fridge for up to 2 days and reheat gently with a splash of coconut milk.

Can I caramelize onions faster?

Yes, but slow cooking gives the best flavor. Medium-low heat and patience prevent burning.

Are they gluten-free?

Absolutely. All ingredients are naturally gluten-free.

Final Thoughts

Vegan Caramelized Onion Mashed Potatoes are the ultimate comfort side: creamy, flavorful, and lightly sweet from the onions. The combination of coconut milk, vegan butter, and slow-cooked onions makes every bite rich and satisfying. This dish elevates any dinner with minimal effort, turning simple mashed potatoes into a memorable, indulgent treat.