5 from 4 votes

Caramelized Onion Roasted Garlic Bisque

Caramelized Onion Roasted Garlic Bisque: This is one of our favorite soups around my house. It's warm and comforting, especially on those cold winter nights. It's rich and creamy. It's filled with veggies. It's fairly light on calories for the flavor punch that it packs.
Course Soup
Cuisine American
Keyword garlic, onion
Prep Time 30 minutes
Cook Time 2 hours 38 minutes
Total Time 3 hours 8 minutes
Servings 6 servings
Calories 209 kcal
Author Debi


  • 1 large whole garlic head
  • 1 ½ tablespoons olive oil divided use
  • 9 cups about 4 large thinly sliced sweet onions
  • 2 ½ cups about 2 medium sliced leeks
  • 1 teaspoon salt divided use
  • 1 teaspoon dried thyme
  • 2 tablespoons all-purpose flour
  • 1/3 cup dry white wine
  • 4 cups vegetable broth
  • 2 cups milk
  • Fresh thyme leaves for garnish
  • Freshly ground black pepper for garnish


  1. Preheat oven to 350° F.
  2. Remove papery outer skin from the garlic head (do not peel or separate the cloves). Rub 1 ½ teaspoons oil on garlic head, and wrap it in foil. Bake for 1 hour; let cool 10 minutes. Separate cloves, and peel the skin off of the cloves. Place the garlic cloves in a small dish and set aside.
  3. While the garlic roasts, heat remaining 1 tablespoon oil in a large saucepan over medium heat. Add onion and leek, and cook 30 minutes, stirring often. Add a small amount of water if the onion starts to cook too fast. Add ½ teaspoon salt and thyme. Cook an additional 30 minutes or until onion is dark and golden in color, stirring occasionally, adding a small amount of water if the onion starts to cook too fast.
  4. Stir the flour into the onion mixture and cook 1 minute. Add wine and broth, and bring to a boil. Reduce heat, and simmer 30 minutes.
  5. Place the roasted garlic in the bowl of a blender, add the remaining ½ teaspoon salt and cooked onion mixture, and process until smooth. This may need to be done in two batches depending on the size of your blender.
  6. Pour the blended onion mixture back to the large saucepan, and add milk; simmer 8 minutes or until thoroughly heated. Garnish with fresh thyme leaves and ground black pepper if desired.

Recipe Notes

Adapted from Cooking Light

Nutrition Facts
Caramelized Onion Roasted Garlic Bisque
Amount Per Serving
Calories 209 Calories from Fat 54
% Daily Value*
Fat 6g9%
Saturated Fat 2g13%
Cholesterol 8mg3%
Sodium 1076mg47%
Potassium 469mg13%
Carbohydrates 31g10%
Fiber 2g8%
Sugar 19g21%
Protein 5g10%
Vitamin A 1085IU22%
Vitamin C 16.1mg20%
Calcium 165mg17%
Iron 1.8mg10%
* Percent Daily Values are based on a 2000 calorie diet.