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Garlic and onion soup in a ceramic bowl with golden broth and fresh herb garnish

Garlic and Onion Soup with Vegetable Broth

Garlic and Onion Soup is a comforting, savory soup with a rich depth of flavor and a tender texture. It is an easy homemade soup choice for cozy meals and simple weeknight dinners.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings: 4
Course: Soup
Cuisine: American
Calories: 350
Ingredients Method Notes

Ingredients
  

Soup
  • 4 large yellow onions, thinly sliced
  • 8 garlic cloves, minced or thinly sliced
  • 2 tablespoons olive oil
  • 2 tablespoons unsalted butter
  • 6 cups vegetable broth
  • 1 bay leaf
  • 1 teaspoon fresh thyme or 3 thyme sprigs
  • 1 teaspoon salt
  • 1/2 teaspoon black pepper
Serving
  • Crusty bread, optional for serving

Method
 

Preparation
  1. Warm a large Dutch oven or soup pot over medium heat, then add the olive oil and unsalted butter.
  2. Add the sliced onions and garlic to the melted butter and oil. Cook for 20–25 minutes, stirring occasionally, until the onions become soft and deeply golden.
  3. Add a small amount of vegetable broth and scrape the bottom of the pot to release any browned bits.
  4. Stir in the remaining vegetable broth along with the bay leaf, thyme, salt, and black pepper.
  5. Simmer the soup uncovered for 20–30 minutes to develop the flavors, then taste and adjust seasoning if needed.
  6. Take out the bay leaf and thyme stems from the soup.
  7. Blend a portion of the soup and mix it back into the pot if a smoother texture is preferred.
  8. Serve the garlic and onion soup hot in bowls with crusty bread or a drizzle of olive oil.

Notes

For a creamier texture without adding dairy, blend only part of the soup so some tender onion pieces remain for texture.