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Mashed Potato Soup with Tarragon
What did you make for Superbowl Sunday? I made something like, oh, forty potato skins–it seemed like that, at least. As I was scooping out the potato flesh from their skins, I asked myself what in the world I’d do with all the leftover potato guts. A couple days later, I turned it into a soup I think I liked even better than the greasy, heavy appetizers!

Mashed potato soup is such an amazing way to use up leftover mashed potatoes, since the bulk of the recipe is already finished, leaving you to whip up a simple roux and simmer, season a bit, and there you have it–a piping bowl of satisfying potato soup that tastes like it took all day to make.

Mashed Potato Soup with Tarragon
Mashed Potato Soup with Tarragon
Potato soup is nothing new, though, so what’s so special about this recipe? It’s simple, so say it with me, folks.




Leftover Mashed Potato Soup with Tarragon

Mashed Potato Soup with Tarragon
That’s pretty much turned into my meditation mantra these days, and for good reason: the light, herbaceous, almost-licorice taste of fresh tarragon turns potato soup from a  ho-hum Pinterested mommy-blogger recipe into a gourmet dish, bursting with flavor and elegance. Of course, there’s nothing wrong with loaded baked potato Crockpot-type recipes (and they’re totally delicious from time to time), but when you’re looking for something with a bit more simultaneous sophistication, ease and lightness, I’ve got the soup for you!

Mashed Potato Soup with Tarragon
Tarragon is an herb almost traditionally found almost exclusively in French cuisine (French tarragon, that is; you can also find a Russian variety, but it’s much weaker in flavor), which naturally infuses any dish with a bit of culinary excitement and feeling of indulgence. I wasn’t sure how well it would work in a potato soup, which is traditionally quite heavy and wintry, but I was so, so pleasantly surprised. The sweet tarragon mingled perfectly with the smooth, creamy potatoes, adding a je-ne-sais-quoi that I just adore.

Recipe By: Cheryl Malik

Mashed Potato Soup with Tarragon

Prep 6 minutes
Cook 5 minutes
A delicious, gourmet use for leftover mashed potatoes, upgraded with bright, fresh tarragon.
4 people


  • 2 tablespoons butter or olive oil (vegan)
  • ½ cup chopped onion
  • 3 cloves garlic , minced
  • 2 tablespoons flour
  • 2 cups stock , chicken or veggie
  • ½ cup milk or unsweetened non-dairy milk , about
  • 2.5 cups leftover mashed potatoes
  • 2 tablespoons chopped fresh tarragon
  • 1 tablespoon chopped fresh parsley
  • salt , to taste
  • white pepper , to taste
  • herb oil or olive oil for drizzle , optional
  • additional fresh parsley or tarragon , chopped, for garnish


  • Melt butter in medium saucepan over medium heat. Sauté onion in melted butter until soft, about 5 minutes, then add garlic and sauté, stirring constantly, about 1 minute, or until deeply aromatic.
  • Sprinkle flour over and cook into a deep, golden-brown roux, about 2-5 minutes or so. Add in stock and whisk until smooth. Bring to a boil then lower heat to medium-low and simmer until a little thickened, about 5 minutes.
  • Add in potatoes and 1/2 cup milk and whisk until smooth. Heat through. Add in additional milk until your desired consistency (I used a full 1 cup milk).
  • Blend either with immersion blender or in batches in a blender (be careful! Keep a towel over the top and make sure the lid is on tight. Always go with smaller than larger batches. The last thing you want is a nice spray of hot potato soup from the blender.. This is why I recommend an immersion blender), until desired consistency.
  • Stir in herbs and season with salt and white pepper, to taste. Ladle into serving bowls.
Garnish with additional fresh herbs and a drizzle of oil, optional.

Approximate Information for One Serving

Serving Size: 4gCalories: 286calProtein: 6gFat: 12gSaturated Fat: 2gCholesterol: 3mgSodium: 536mgPotassium: 596mgTotal Carbs: 41gFiber: 3gSugar: 5gNet Carbs: 38gVitamin A: 552IUVitamin C: 36mgCalcium: 93mgIron: 2mg
Nutrition Disclaimers
Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.
Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.
To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.

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