This Low-Carb Cream of Roasted Asparagus Soup recipe makes a flavorful creamy way to welcome spring and early summer. This recipe can be part of a low-carb, keto, diabetic, Atkins, gluten-free, grain-free, or Banting diet. Instructions include an easy photo tutorial.

Low-Carb Cream of Roasted Asparagus Soup recipe -ingredients

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The Inspiration

I don’t know if all of you are on Instagram, but last week @hautecuisines were celebrating asparagus. They shared gorgeous photos of fresh cut asparagus, asparagus tarts, and loads of asparagus soup. After looking at all of those mouthwatering photos, it made me hungry for–you guessed it–asparagus soup. 

By the way, if you’re on Instagram and want to be in the know about what’s going on in our kitchen (including some surprise visits from my farm critters and house critters on my Instagram stories), follow us!

The Recipe

I wanted my recipe for asparagus soup to be something special. Something that set it apart from the massive collection of soups on we see on the internet. I wanted this soup to really shine.

Low-Carb Cream of Roasted Asparagus Soup recipe -served in a footed bowl.

In order to make it super special, I decided to combine it with green onions. To me, both green onions and asparagus are synonymous with spring. The flavors work together remarkably well. It’s almost like they were meant to be together.

I took this marriage of green onions and asparagus and roasted it. Roasting it adds in some caramelized goodness as well as a soft, toasted flavor. Roasting the vegetables makes the kind of soup that will stick in your memory for years to come. 

Low-Carb Cream of Roasted Asparagus Soup recipe-garnished with asparagus sprigs

Along with the roasted vegetables, I use a bit of garlic, some wine, bone broth, and cream for the soup base. I add in just a hint of red pepper flakes to add interest without making it hot.

Low-Carb Cream of Roasted Asparagus Soup recipe -ingredients shot

This soup makes a perfect starter or can be used as a main dish. It would be perfect for a spring or summer brunch. Enjoy!

-Annissa

Low-Carb Cream of Roasted Asparagus Soup--Finished product.
4.91 from 10 votes
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Low-Carb Cream of Roasted Asparagus Soup

This Low-Carb Cream of Roasted Asparagus Soup recipe makes a flavorful creamy way to welcome spring and early summer. This recipe can be part of a low-carb, keto, diabetic, Atkins, gluten-free, grain-free, or Banting diet

Course Soup
Cuisine American, low-carb
Prep Time 10 minutes
Cook Time 20 minutes
Total Time 30 minutes
Servings 4
Calories 311 kcal
Author Annissa Slusher

Ingredients

For the roasted vegetables:

  • 12 ounces asparagus spears tough ends removed (peel the stalks if the asparagus is large and tough.)
  • 2 ounces green onions (about 4 onions)
  • 1 tablespoon ghee or butter melted
  • sea salt
  • black pepper freshly ground

For the soup base:

  • 1 tablespoon butter
  • 3 large cloves garlic crushed
  • 1/2 cup dry white wine
  • 4 cups chicken bone broth or stock (vegetables stock works fine)
  • 1 cup heavy whipping cream
  • 1/16 teaspoon dry red chile pepper flakes
  • sea salt
  • black pepper freshly ground

Instructions

For the roasted vegetables:

  1. Preheat oven to 375º Fahrenheit. Place asparagus and green onions on a baking sheet. Drizzle melted ghee over top. Rub the ghee or butter all over the vegetables to coat. Sprinkle lightly with sea salt and pepper. 

    Veggies ready for the oven.
  2. Roast asparagus and green onions in the preheated oven for 15 minutes. Remove from the oven, turn the vegetables and roast 5 minutes longer. Remove from the tray and cut into large chunks. Be sure to keep some of the tops set aside to use as garnish later.

For the soup base:

  1. Meanwhile, heat a heavy medium saucepan or dutch oven over medium high heat. Add butter. When butter has melted and has stopped foaming, stir in the crushed garlic. Cook garlic, stirring frequently, until fragrant, about 30 seconds to a minute.

    Low-Carb Cream of Roasted Asparagus Soup recipe -Adding the garlic.
  2. Stir in the wine. Turn heat to high. Bring wine to a simmer, stirring occasionally to bring up any browned bits on the bottom of the pan. Simmer wine until much of the wine has evaporated and the mixture has thickened slightly. Stir in  the broth. Remove from heat.

  3. Transfer the roasted asparagus (reserving a few tops for garnish, if desired) and green onions into the broth mixture. Using a blender or an immersion blender, blend soup until liquified. Transfer back to the dutch oven if using a blender. 

    Low-Carb Cream of Roasted Asparagus Soup recipe-Adding the roasted vegetables to the soup base.
  4. Over medium high heat, bring heat back to a simmer. Stir in cream and red chili flakes. Bring soup back to a simmer. Simmer until thick enough to coat the back of a spoon. 

    Low-Carb Cream of Roasted Asparagus Soup--Finished product.
  5. Season to taste with sea salt and black pepper. The amount will vary depending on the type of broth used and personal preference. I used an unsalted broth and added in about 1/2 teaspoon sea salt and 1/4 teaspoon black pepper. Serve warm, garnished with the reserved asparagus tips.

Recipe Notes

Serving size: 1/4th of the recipe or about 1 1/4 cup.

Net Carbs (g): 5

Nutrition Facts
Low-Carb Cream of Roasted Asparagus Soup
Amount Per Serving
Calories 311 Calories from Fat 252
% Daily Value*
Fat 28g43%
Saturated Fat 17g106%
Trans Fat 0g
Polyunsaturated Fat 1g
Monounsaturated Fat 8g
Cholesterol 97mg32%
Potassium 198mg6%
Carbohydrates 6g2%
Fiber 1g4%
Sugar 3g3%
Protein 5g10%
Vitamin A 1450%29%
Vitamin C 6.6%8%
Calcium 60%6%
Iron 1.3%7%
* Percent Daily Values are based on a 2000 calorie diet.

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