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Home » Popular » Soups, Chilis, & Stews » Leftover Mac and Cheese Soup

Leftover Mac and Cheese Soup

October 15, 202113 Comments

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Leftover Mac & Cheese Soup ~ Got mac and cheese leftover from Thanksgiving? Bring your side dish back to life by serving it in a whole new way! via @thiswifecooks

Leftover Mac and Cheese Soup ~

Got leftover mac and cheese?

Bring your leftovers back to life by serving them in a whole new way!

Leftover Mac & Cheese Soup ~ Got mac and cheese leftover from Thanksgiving? Bring your side dish back to life by serving it in a whole new way!

One of the best things about the day after Thanksgiving is all the leftovers but let’s be honest, some hold up better than others. Stuffing Muffins, Dressings, even the Green Bean Casseroles are all just as tasty the next day.

Mac and cheese can be a different story. It’s just the nature of the dish.

When left overnight in the fridge, pasta has a tendency to soak up whatever sauce it is sitting in. This can leave the dish drier overall and, well, it’s just not as good as it was that first day.

When faced with leftover mac and cheese, the best thing to do is repurpose it into a whole new and delicious meal.

This soup is rich, creamy, and ready to serve in about 20 minutes!

Leftover Mac & Cheese Soup ~ Got mac and cheese leftover from Thanksgiving? Bring your side dish back to life by serving it in a whole new way!

Ingredients for Leftover Mac & Cheese Soup

  • 1/4 cup vegan butter
  • 1/4 cup yellow onion, finely chopped
  • 2 teaspoons garlic, minced
  • 1/4 cup all-purpose flour
  • 4 cups vegan chicken-style broth
  • 2 cups vegan cheddar cheese
  • 4 ounces vegan cream cheese
  • 1/3 cup mild-flavored plant milk, such as oat or unsweetened almond
  • 1/4 teaspoon ground black pepper
  • 4 cups prepared mac & cheese

How to make Leftover Mac & Cheese Soup

STEP ONE: Into a large pot over medium-high heat, add the butter. When the butter is melted, add the onions. Cook, stirring frequently for 2 minutes, until softened and fragrant.

STEP TWO: Add garlic and continue cooking for an additional 30 seconds.

STEP THREE: Whisk in the flour until incorporated; the mixture will be thick.

STEP FOUR: Gradually add the broth, whisking until the consistency is smooth.

STEP FIVE: Bring just to a boil then reduce the heat to low.

STEP SIX: Into the pot, add the cream cheese, cheddar cheese, milk, and black pepper. Stir frequently until cheeses are melted.

STEP SEVEN: Add the prepared mac and cheese, stirring to distribute throughout the soup.

STEP EIGHT: Adjust seasoning to taste and serve hot.

Leftover Mac & Cheese Soup ~ Got mac and cheese leftover from Thanksgiving? Bring your side dish back to life by serving it in a whole new way!

More Cheesy Recipes You’ll Love!

  • Creamy Vegan Mac and Cheese
  • Easy Cheesy Tetrazzini
  • Cheesy Cauliflower Soup
  • Vegan Pub Style Beer Cheese Dip
  • Cheesesteak Sloppy Joes

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Leftover Mac & Cheese Soup ~ Got mac and cheese leftover from Thanksgiving? Bring your side dish back to life by serving it in a whole new way!

Originally published on December 1, 2015. Updated October 15, 2021.

Leftover Mac & Cheese Soup ~ Got mac and cheese leftover from Thanksgiving? Bring your side dish back to life by serving it in a whole new way!

Leftover Mac and Cheese Soup

Got mac and cheese leftover from Thanksgiving? Bring your side dish back to life by serving it in a whole new way!
5 from 11 votes
Print Pin Rate
Course: Dinner, Lunch
Cuisine: American
Keyword: comfort food, soup, vegan, vegan cheese, vegetarian
Prep Time: 10 minutes
Cook Time: 10 minutes
Total Time: 20 minutes
Servings: 6
Calories: 795kcal
Author: Holly Gray
Prevent your screen from going dark

Ingredients

  • 1/4 cup vegan butter
  • 1/4 cup yellow onion finely chopped
  • 2 teaspoons garlic minced
  • 1/4 cup all-purpose flour
  • 4 cups vegan chicken-style broth
  • 2 cups vegan cheddar cheese
  • 4 ounces vegan cream cheese
  • 1/3 cup mild-flavored plant milk such as oat or unsweetened almond
  • 1/4 teaspoon ground black pepper
  • 4 cups prepared mac & cheese

Instructions

  • Into a large pot over medium-high heat, add the butter. When the butter is melted, add the onions. Cook, stirring frequently for 2 minutes, until softened and fragrant.
  • Add garlic and continue cooking for an additional 30 seconds.
  • Whisk in the flour until incorporated; the mixture will be thick.
  • Gradually add the broth, whisking until the consistency is smooth.
  • Bring just to a boil then reduce the heat to low.
  • Into the pot, add the cream cheese, cheddar cheese, milk, and black pepper. Stir frequently until cheeses are melted.
  • Add the prepared mac and cheese, stirring to distribute throughout the soup.
  • Adjust seasoning to taste and serve hot.

Nutrition

Calories: 795kcal | Carbohydrates: 93g | Protein: 24g | Fat: 37g | Saturated Fat: 6g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 2g | Trans Fat: 1g | Sodium: 2349mg | Potassium: 340mg | Fiber: 3g | Sugar: 3g | Vitamin A: 721IU | Vitamin C: 1mg | Calcium: 291mg | Iron: 4mg
Tried this recipe?Mention @thiswifecooks or tag #thiswifecooks!
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Filed Under: Comfort Food, Kid Favorites, Lunch & Dinner, Soups, Chilis & Stews, Soups, Chilis, & Stews, Vegan, Vegan Thanksgiving Recipes, Vegetarian Tagged With: cheese, comfort food, soup, Thanksgiving, vegetarian

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Reader Interactions

Comments

  1. thiswifecooks

    January 6, 2017 at 8:10 pm

    Thank you! I’ve updated the recipe. 🙂

    Reply
    • Whitney

      May 25, 2017 at 8:50 pm

      I cant find the updated version…how much broth total?

    • thiswifecooks

      May 29, 2017 at 12:44 am

      4 cups 🙂

  2. Kayla DiMaggio

    October 16, 2021 at 2:59 pm

    5 stars
    I have to be honest when I say I never have leftover mac and cheese lol! However, I am made a double batch of mac and cheese just to make this recipe and we all raved over it!

    Reply
    • thiswifecooks

      October 16, 2021 at 5:59 pm

      Lol leftover mac and cheese is a rare occurrence around here too! We do usually have enough for soup leftover after Thanksgiving though and it’s nice to turn it into a whole new meal!

  3. Chantry

    October 16, 2021 at 4:42 pm

    5 stars
    I love this idea so much! I might make Mac and cheese just so I can turn it into soup!

    Reply
    • thiswifecooks

      October 16, 2021 at 5:57 pm

      I have definitely done that!

  4. NATALIA

    October 16, 2021 at 5:07 pm

    5 stars
    Mmmm! This soup looks so creamy! What a great way to repurpose mac and cheese leftovers, I have to try it. Thanks for sharing!

    Reply
    • thiswifecooks

      October 16, 2021 at 6:00 pm

      Yes! I hope you love it as much as we do!

  5. Emily

    October 17, 2021 at 12:11 am

    5 stars
    This is a brilliant use of leftover mac and cheese! It’s delicious and pure comfort food, thank you for the recipe!

    Reply
  6. Maiko

    October 17, 2021 at 10:51 am

    5 stars
    Who knew mac and cheese could be a soup?! This looks absolutely delicious! I never have leftover mac and cheese haha though I need to make loads just to make this recipe!

    Reply
  7. Leonardeffery

    January 7, 2023 at 10:08 am

    Dayuuuuuuuum Yuuuuuuummmmmmmy Yummy In MyTummy

    Reply
    • Minion

      January 7, 2023 at 10:09 am

      5 stars
      Ikr 😼

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