Slow Cooker Onion Soup

Slow Cooker Onion Soup
  • PREP TIME
    15 mins
  • COOK TIME
    4 hrs 15 mins
  • TOTAL TIME
    4 hrs 30 mins
  • SERVING
    3 People
  • VIEWS
    63

Imagine rich, deeply caramelized onions melding with savory beef broth, all infused with a hint of brandy. This slow cooker onion soup transcends the ordinary, delivering a restaurant-quality experience in the comfort of your own home.

Ingridients

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Nutrition

  • Carbohydrate
    31 g
  • Cholesterol
    62 mg
  • Fiber
    3 g
  • Protein
    17 g
  • Saturated Fat
    16 g
  • Sodium
    1044 mg
  • Sugar
    9 g
  • Fat
    29 g
  • Unsaturated Fat
    0 g

DIRECTIONS

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Image Step 01
01 Step

Recipe View 11 mins Melt butter in a skillet over medium heat. Add the sliced sweet onion and red onion and cook, stirring occasionally, until softened and caramelized, about 10-12 minutes.

Image Step 02
02 Step

Recipe View 2 mins Add the minced garlic to the skillet and cook until fragrant, about 1-2 minutes. Be careful not to burn the garlic.

Image Step 03
03 Step

Recipe View 1 mins Transfer the caramelized onion and garlic mixture to a slow cooker.

Image Step 04
04 Step

Recipe View 1 mins Pour in the beef stock, brandy, soy sauce, and Worcestershire sauce. Season generously with sea salt and freshly ground black pepper.

Image Step 05
05 Step

Recipe View 4 hrs Cover and cook on High for 4-5 hours, or on Low for 7-8 hours, allowing the flavors to meld and deepen.

Image Step 06
06 Step

Recipe View 1 mins Preheat your oven's broiler and position the oven rack about 6 inches from the heat source.

Image Step 07
07 Step

Recipe View 1 mins Ladle the soup into 3 oven-safe bowls. Top each bowl with croutons and a slice of Provolone cheese.

Image Step 08
08 Step

Recipe View 3 mins Place the bowls under the broiler and broil until the cheese is melted, bubbly, and lightly browned, about 2-3 minutes. Watch carefully to prevent burning.

For a vegetarian option, substitute vegetable broth for beef stock.
A splash of dry sherry can be used in place of brandy.
For a more intense onion flavor, caramelize the onions for a longer period, watching carefully to prevent burning.
If you don't have oven-safe bowls, you can melt the cheese on the crouton-topped soup in a skillet under the broiler.

Ellen Mohr

Written by

Our recipe authors are passionate food lovers who share thousands of diverse dishes from around the world. They bring daily cooking inspiration with delicious, easy-to-make recipes for every occasion.

RECIPE REVIEWS

Avarage Rating: 4.3/ 5 ( 21 Ratings)
Total Reviews: (5)
  • Nelson Witting

    This soup is absolutely divine! The caramelized onions make all the difference.

  • Carlee Okon

    Best onion soup I've ever made! The slow cooker makes it so easy and the flavor is amazing.

  • Malvina Macgyver

    I made this for a dinner party, and everyone raved about it. So easy to make in the slow cooker!

  • Candida Bartell

    I added a pinch of red pepper flakes for a little kick. Delicious!

  • Modesta Fay

    The brandy adds such a wonderful depth of flavor. Will definitely make this again.

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