November 18, 2021

Caramelized Onions and Roasted Garlic Mashed Potatoes

If you think that the caramelized onions and roasted garlic can compromise the lightness and fluffiness of the potatoes, think again! In fact, it does quite the opposite. It adds depth and a mixture of sweet from the caramelized onions and savory from the roasted garlic. Honestly, it is the perfect spin on this classic dish that is guaranteed to be a hit on your Thanksgiving table.

Although there are three different items that need to be made in order for this dish to be complete, don't let that steer you away from making this. I promise that they are all super easy to do.

So, how do I make this dish? I am about to tell you! But, I will say that when it comes to this recipe, slow and steady wins the race could not be more true.

First, start by roasting the garlic, this is the easiest part, but does take the longest. All you need to do is chop off the top of the garlic bulb. Drizzle it with a generous amount of olive oil and sprinkle it with salt and roast in the oven for 45 minutes.

While your garlic is roasting, caramelize your onions, this is also super easy to do. But, it takes some time. Once the onion is sliced in half moons, coat them with olive oil and saute them until they are golden brown. This process takes about 30 minutes.

Once your garlic and onions are done, the potatoes themselves take no more than 15 minutes to make. Cook, mash, add some milk, butter, salt and pepper. Then, toss in your caramelized onions and roasted garlic and done!

Now, let’s say that someone in your family is not the biggest fan of garlic or the biggest fan of caramelized onions, or heck even both. That’s no problem! You can eliminate both and make traditional mashed potatoes or just stick to one or the other. This recipe is geared towards all flavor profiles and aims to please. But, do your tastebuds a favor and keep the roasted garlic and caramelized onions in, they will thank you later!

Did you make this? If so, make sure to tag and follow @prettyplatebymichelle on instagram or leave a comment below and let me know what you thought! I  love to see your Pretty Plate and hear from you!

Caramelized Onions and Roasted Garlic Mashed Potatoes

The inclusion of caramelized onions and roasted garlic to these silky smooth potatoes takes your mashed potato game to the next level! It is the ultimate flavor combination and the best part is that if you have no gravy, no problem!



  • 2 Yellow onions, sliced in half moons and caramelized
  • 4 TBSP olive oil, divided
  • 1/2 TSP coarse salt
  • 4 Russet potatoes
  • 1 Garlic bulb, roasted
  • 1 Cup Full fat Oat milk
  • ¼ Cup butter, sliced + extra for the top
  • 1 TSP salt
  • ½ TSP black pepper
  • Fresh parsley, optional for garnish

For the Roasted Garlic: 

  1. Preheat your oven to 350 degrees.
  2. Cut the top of your garlic bulb off.
  3. Pour 2 TBSP olive oil over the top of your garlic cloves and make sure the oil gets in all of the nooks and crannys. Sprinkle your coarse salt over the top.
  4. Place it in a foil and bring all ends to the top and crinkle together to close tight.
  5. Place in the oven for 1 hour minutes or until the garlic cloves are golden brown and tender.
  6. When done, remove from heat and let cool. Set aside until ready to add to the potatoes.

For the Caramelized Onions: 

  1. Cut the ends off of your onion. Peel the skin off and then cut the onion in half. Slice them into half moons. Repeat with your second onion.
  2. Heat a pan over medium heat, add 2 TBSP olive oil. Swirl around the pan to coat. Add your onions and cook over medium to low heat for about 35 minutes or until the onions are golden brown and caramelized.
  3. When done, set aside until ready to add to the mashed potatoes.

For the Caramelized Onion and Roasted Garlic Mashed Potatoes: 

  1. Peel each of your potatoes and then cut them into cubes.
  2. Heat a pot over medium heat, add a little bit of salt. Bring to a boil.
  3. Once boiling, add the potatoes. Cook over medium heat for 15 minutes or until potatoes are tender.
  4. Once the potatoes are tender, drain and place in another large bowl.
  5. Add oat milk, a pinch of salt, a pink of black pepper and butter. Using a potato masher or a electric hand mixer, mix and mash your potatoes.
  6. Once mashed, add in your caramelized onions and squeeze out your roasted garlic from the bulb into the potatoes. Using your masher or electric hand mixer, mix again to combine. Add additional salt and pepper to taste if desired.
  7. Serve right away and garnish with parsley or extra butter.
  8. ENJOY!
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October 19, 2021
So delicious!