Vegan Caramelized Onion Mashed Potatoes | Short Girl. Tall Order

Name: Vegan Caramelized Onion Mashed Potatoes | Short Girl. Tall Order
Prep time: 15 min
Cook time: 40 min
Total time: 55 min
Cuisine: Vegan
Ingredients: 4 large russet potatoes, peeled and chopped; 2 large yellow onions, thinly sliced; 3 tablespoons olive oil or vegan butter; 1 cup almond milk or any plant-based milk; 2 tablespoons nutritional yeast (for a cheesy flavor); Salt and black pepper to taste; Fresh thyme or rosemary (optional, for extra flavor); Vegan sour cream or cashew cream (for garnish)

A creamy mound of vegan caramelized onion mashed potatoes topped with golden-brown caramelized onions and fresh herbs, served on a rustic ceramic plate with a sprig of rosemary and a drizzle of olive oil. The background features a cozy wooden table with fall-themed decorations and a side of green vegetables.

Posted OnNovember 23, 2025
Sophia

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Vegan Caramelized Onion Mashed Potatoes | Short Girl. Tall Order 🥔🧅✨

1. Introduction

Celebrate the holidays with a comforting and flavorful side dish: Vegan Caramelized Onion Mashed Potatoes. This dish seamlessly combines creamy mashed potatoes with sweet, caramelized onions, making it a perfect addition to your Vegetarian Thanksgiving Dinner Recipes or Vegan Christmas Dinner Recipes. Whether you’re hosting a Vegan Holiday gathering or searching for Vegan Christmas Sides to impress your guests, this dish offers a delightful combination of flavors and textures that everyone will love. Plus, it’s an ideal Vegan Christmas Main Dish or a fantastic Vegan Christmas Food choice. Ready to elevate your holiday feast? Let’s dive into this vegan, savory, and irresistibly delicious mashed potato recipe.

2. Ingredients for Vegan Caramelized Onion Mashed Potatoes

4 large russet potatoes, peeled and chopped
2 large yellow onions, thinly sliced
3 tablespoons olive oil or vegan butter
1 cup almond milk or any plant-based milk
2 tablespoons nutritional yeast (for a cheesy flavor)
Salt and black pepper to taste
Fresh thyme or rosemary (optional, for extra flavor)
Vegan sour cream or cashew cream (for garnish)

For additional flavor inspiration, explore other Vegan Side Dishes and Vegan Main Courses.

3. Step-by-step instructions for vegan caramelized onion mashed potatoes

3.1 Preparing the potatoes

Start by peeling and chopping the potatoes into evenly sized pieces. Place them in a large pot filled with cold water and bring to a boil. Cook for about 15-20 minutes or until the potatoes are tender when pierced with a fork. Drain and set aside.

3.2 Caramelizing the onions

While the potatoes are boiling, heat 2 tablespoons of olive oil or vegan butter in a large skillet over medium heat. Add the sliced onions and cook slowly, stirring occasionally. After about 20-25 minutes, the onions will turn golden-brown and develop a sweet, caramelized flavor. Season with a pinch of salt and optional thyme or rosemary for enhanced aroma.

3.3 Mashing the potatoes

Once the potatoes are cooked and drained, transfer them to a large bowl. Mash using a potato masher or a hand mixer, gradually adding the plant-based milk to reach your desired creaminess. Mix in nutritional yeast for a subtle cheesy flavor, and season with salt and black pepper to taste.

3.4 Combining and serving

Fold the caramelized onions into the mashed potatoes, ensuring they are evenly distributed. For added flavor, consider sprinkling fresh herbs or vegan cheese on top. Serve hot, garnished with vegan sour cream or cashew cream for an extra creamy touch.

4. Tips for perfect vegan caramelized onion mashed potatoes

Use starchy potatoes like russet or Yukon Gold for the creamiest mash.
Cook the onions slowly to develop deep caramel flavor—patience is key!
Adjust the amount of plant-based milk to get the perfect creamy texture, especially for Vegan Sweet Potato Mash.
For extra richness, add a splash of vegan gravy or mushroom broth during mashing.

5. Storage Tips for Vegan Caramelized Onion Mashed Potatoes

Leftover mashed potatoes can be stored in an airtight container in the refrigerator for up to 3 days. When reheating, add a splash of plant-based milk to restore creaminess. For longer storage, freeze in portions for up to 2 months. Thaw in the refrigerator overnight and reheat in the microwave or on the stovetop.

6. Serving suggestions and pairings for vegan holiday meals

These vegan caramelized onion mashed potatoes make a perfect side dish for your Vegan Christmas Main Dish, pairing beautifully with roasted vegetables or plant-based gravy. Incorporate them into your festive table alongside other Vegan Christmas Sides for a satisfying vegan meal. For a complete vegan holiday feast, consider serving with a hearty vegan roast or stuffing.

7. Frequently Asked Questions (FAQs) about vegan caramelized onion mashed potatoes

Q: Can I make vegan caramelized onion mashed potatoes ahead of time?

A: Yes, prepare and store in the refrigerator for up to 3 days. Reheat gently on the stovetop, adding extra plant-based milk if necessary for added creaminess.

Q: Are these mashed potatoes suitable for gluten-free diets?

A: Absolutely! This recipe is naturally gluten-free, making it perfect for guests with gluten sensitivities.

Q: How can I make this dish more flavorful?

A: Incorporate fresh herbs like thyme or rosemary, add a splash of vegan gravy, or top with toasted vegan-friendly croutons for extra crunch.

8. Conclusion

Vegan Caramelized Onion Mashed Potatoes are an irresistibly delicious addition to your Thanksgiving table or Christmas feast. Their perfect blend of creamy potatoes and sweet, savory caramelized onions makes them a crowd-pleaser for vegans, vegetarians, and omnivores alike. Whether served as a Vegan Christmas Sides or incorporated into your everyday meal rotation, this dish promises comfort and festive cheer. Embrace this vegan holiday favorite and enjoy a memorable, plant-based celebration!