Cooking, Baking & Cocktail Shaking

Roasted Garlic Ranch Mashed Potatoes

These Roasted Garlic Ranch Mashed Potatoes get their flavor from fresh herbs, tangy buttermilk, and caramelized garlic.

Roasted Garlic Ranch Mashed Potatoes

Mashed potatoes rate number one at our holiday table. It’s the favorite side dish every year, which means I usually have to make a double batch to accommodate my hungry guests. Plus, seconds! I live for seconds and leftovers during the holiday season. I like to be able to eat both my Thanksgiving and Christmas meals twice.

Squirrel and I are still trying to decide what we’re doing for Thanksgiving since both sets of parents will be hosting dinner this year, which means we’ll be consuming two meals (again).

Roasted Garlic Ranch Mashed Potatoes

When I say my parents are hosting, what that really means is that I’ll be preparing the dinner and they’ll provide the table. My mom is subpar in the kitchen. Her idea of dinner is a cold bowl of cereal or a lunchmeat sandwich, none of which come close to the very high bar I set when it comes to my holiday menu. The only two tasks I entrust my mom with are preparing green beans (she makes the best) and sauerkraut (she’s the only one who can get it to taste like great mom-mom’s). Oh, and she’s pretty great at washing the dishes. Good riddance to that responsibility! I have more important tasks to worry about rather than trying to scrape turkey particles from the roasting pan.

Roasted Garlic Ranch Mashed Potatoes

After some careful thought, I’ve decided to switch things up a bit and trade some old menu items for some new and improved recipes. This decision will inevitably cause a generous dose of whining, bitching, and pleading from the family, but I’m going to hold strong and stick to my guns. Every time one of them utters a single “but,” they’re going to get the hand. I’m sure you’re familiar with The Hand? It was the cool thing to do in the ’90s. Well, I’m bringing it back!

Roasted Garlic Ranch Mashed Potatoes

Every Thanksgiving since the dawn of time, I’ve made a mashed potato casserole. It’s a damn good mashed potato casserole, but I’m ready to welcome change and to finally refuse the people what they want. Sometimes it’s about what I want, and this year I want a big bowl of these Roasted Garlic Mashed Potatoes. This recipe was inspired by my Homemade Buttermilk Ranch Dressing recipe.

Being the ranch fanatic I am, I like to ranch-ify anything and everything I can, and I thought mashed potatoes would be the perfect canvas… And so they were! There’s no actual ranch dressing in this recipe. Instead, I added the same flavor elements that make up my ranch dressing recipe to a bowl of creamy mashed Idaho® russet potatoes.

Did I mention the roasted garlic? Garlic is delicious as is, but it’s even better roasted. The pungent cloves caramelize and become slightly sweet when roasted. They turn any dish into something special.

Roasted Garlic Ranch Mashed Potatoes

These herb-infused potatoes will be all the rage at your next holiday gathering.

Roasted Garlic Ranch Mashed Potatoes

Whipped mashed potatoes infused with roasted garlic, fresh herbs, and a splash tangy buttermilk.

Yield: 4 servings

Total Time: 45 minutes

Prep Time: 10 minutes

Cook Time: 35 minutes


  • 2 pounds Idaho® potatoes, peeled and cut into chunks
  • 2 small heads garlic
  • 1 teaspoon olive oil
  • 4 tablespoons butter or Country Crock® Spreadable Butter
  • ½ cup sour cream
  • ½ cup milk
  • 3 tablespoons buttermilk
  • 3 tablespoons chopped fresh chives
  • 2 tablespoons chopped fresh parsley
  • 1 tablespoon chopped fresh dill
  • ½ teaspoon onion powder
  • Salt and pepper to taste


  1. Preheat oven to 350 degrees F. Slice a thin layer off each head of garlic to expose the cloves inside. Place both heads of garlic in an aluminum foil pouch. Drizzle the olive oil over the heads of garlic and sprinkle with salt and pepper. Close the pouch and place on a baking sheet. Bake for 35-40 minutes, or until the cloves are soft and tender. Allow the garlic to cool long enough to handle and squeeze out the cloves; set aside.
  2. Place the potatoes in a large pot and add just enough water to cover. Bring to a boil over medium-high heat and cook until the potatoes are fork tender, about 15-20 minutes. Drain the potatoes and place them back in the warm pot.
  3. Add the roasted garlic cloves, butter, and sour cream to the pot with the potatoes. Using a potato masher or electric mixer, mash or beat until smooth and creamy. Gently stir in the milk, buttermilk, fresh herbs, and onion powder until thoroughly combined. Season with salt and pepper to taste. Serve garnished with fresh herbs, if desired.

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Disclosure: This recipe was developed for the lovely folks at Idaho® Potato. All opinions are my own. Thank you for supporting my recipes and site while I work with brands I adore.

16 Responses to “Roasted Garlic Ranch Mashed Potatoes”

  1. #
    Taylor @ Food Faith Fitness — November 9, 2015 at 8:32 am

    RANCH MASHED POTATOES?! Now that sounds AH-MAY-ZING.  Mashed potatoes are totally my jam, but I never ranch-i-fied them. You are a genius. Pinned!


  2. #
    Courtney @ NeighborFood — November 9, 2015 at 10:03 am

    I think even the most grumbly traditionalists can make room on their menu for these! You know how much I love ranch and roasted garlic makes everything better. Love these!


  3. #
    Anita at Hungry Couple — November 9, 2015 at 10:13 am

    Mashed potatoes have always been one of my ultimate comfort foods but they do tend to be bland and need a flavor boost. You’ve added the flavor! Pinned!


  4. #
    Lisa @ Wine & Glue — November 9, 2015 at 11:06 am

    Ooooo, I love to ranch-ify things too!!  These potatoes look like perfection! Pinning the snot out of them!


  5. #
    Kayle (The Cooking Actress) — November 9, 2015 at 1:25 pm

    1-I’m jealous you only have 2 families to juggle, thanks to divorce Michael and I have 4 *sigh*
    2-I’m also jealous that it’s just parents hosting so you get to make a bunch of food! Our Thanksgivings are all still hosted by our grandparents so our aunts and uncles etc end up making most of the food-I WANT TO MAKE THANKSGIVING FOOD TOO!
    3-omigosh mashed potatoes are my fave part of Tgiving and these look like I’ddef. take second…and third…and fourth helpings!


  6. #
    Deborah — November 9, 2015 at 1:49 pm

    It’s always hard to let go of tradition when it comes to Thanksgiving, but I’m going to say these are definitely worth breaking tradition for!!


  7. #
    Nicole ~ Cooking for Keeps — November 9, 2015 at 6:16 pm

    When is ranch seasoning NOT a good idea??? I can’t even imagine how good these ‘taters are! 


  8. #
    Ashley — November 10, 2015 at 5:29 pm

    Two dinners! I would be so full! haha These potatoes look so so good – I LOVE that you used roasted garlic!!


  9. #
    Lori @ RecipeGirl — November 10, 2015 at 7:56 pm

    I can see why these potatoes are a family favorite and I love that you add in a bit of buttermilk!


  10. #
    Karly — November 12, 2015 at 9:27 am

    Oh, I bet these are just packed with flavor! Love it.


  11. #
    Sabrina Modelle — November 14, 2015 at 11:36 pm

    What is this magic you are doing with ranch and roasted garlic and potatoes. I have a not-so-secret obsession with homemade ranch too. I seriously need to try these.
    I just got back from Idaho potato harvest and so I have some lovely Idaho potatoes in my pantry. These are so happening!


  12. #
    Greemat — November 16, 2015 at 9:53 pm

    Ranch dressing is like a miracle additive to food.  I love it and hubby loves it.  Can’t ask for more than that.  Thank you for a great recipe.  I will make it in the next several day and will follow it perfectly as I always do with trying a new recipe.  THEN!!!!  I will play with it one way and many ways.  You gave me a great start.


  13. #
    Carla — November 22, 2015 at 4:00 pm

    I have a feeling once your family tries these potatoes, they’ll forget about what you did and request this for years to come. I know I would with the roasted garlic and ranch!


  14. #
    Lori @ Foxes Love Lemons — December 7, 2015 at 1:48 pm

    “When I say my parents are hosting, what that really means is that I’ll be preparing the dinner and they’ll provide the table.”

    LOL. Yes. That’s been me the last five years. I was so thankful (pun intended) to have a new house with a big enough dining room that I could host this year. 

    Mashed potatoes are the #1 most important thing on my table, and I always like to add some extra herbs and spices to them, even for Thanksgiving. Ranch? Get outta town. Love.


  15. #
    Susan — December 22, 2015 at 2:59 pm

    Other people hosting has totally become “but you’ll cook too” now.  So I get where you are coming from.  These potatoes, I love everything you have done.  All the herbs and the roasted garlic and the touch of buttermilk.  Must taste out of this world good! 


  16. #
    Lauren @ Healthy Delicious — January 16, 2016 at 11:14 am

    We’re big on Tradition for the holidays, too. These potatoes are perfect – they break from it in juuuuust the perfect amount to still be familiar and comforting. Plus they sound awesome! 


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