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Outback Steakhouse Walkabout Onion Soup

Outback Steakhouse Walkabout Onion Soup

The Outback Steakhouse Walkabout Onion Soup is a rich and savory soup featuring slow-caramelized yellow onions, a hearty beef broth, and a luscious golden crust of melted Swiss and provolone cheeses atop toasted baguette slices. This comforting classic combines deep flavors and textures for a warm, filling meal or starter that’s easy to prepare at home and customizable to suit various dietary preferences.

  • Total Time: 1 hour 30 minutes
  • Yield: 6 servings 1x

Ingredients

Scale

Soup Base

  • 6 large yellow onions, thinly sliced
  • 4 tablespoons butter
  • 2 tablespoons olive oil
  • 2 tablespoons all-purpose flour (or gluten-free flour for GF version)
  • 6 cups beef broth (or vegetable broth for vegetarian option)
  • 1 teaspoon dried thyme
  • 1 tablespoon Worcestershire sauce

Toppings

  • 1 baguette or French bread, sliced
  • 1 cup Swiss cheese, shredded
  • 1 cup provolone cheese, shredded

Optional Seasonings and Variations

  • Pinch of cayenne pepper or smoked paprika (for spicy kick)
  • Fresh rosemary or sage (to replace thyme)

Instructions

  1. Caramelize the Onions: Thinly slice the yellow onions. In a large pot, heat butter and olive oil over medium-low heat. Add the onions and cook slowly, stirring frequently for about 45 minutes, until they become golden brown and sweetly caramelized.
  2. Create the Soup Base: Sprinkle the flour over the caramelized onions and stir well to coat. Cook for 1 minute to remove the raw flour taste. Gradually add the beef broth while stirring constantly to combine. Add dried thyme and Worcestershire sauce, stirring to incorporate all ingredients.
  3. Simmer the Soup: Reduce heat and let the soup simmer gently for 20 to 30 minutes. This slow simmer allows the flavors to meld and the soup to thicken slightly.
  4. Prepare the Bread and Cheese: Slice the baguette and toast the slices lightly until just crisp. Mix the shredded Swiss and provolone cheeses together and set aside.
  5. Assemble and Broil: Ladle the hot soup into oven-safe bowls. Place a toasted bread slice on top of each bowl, then cover generously with the cheese mixture. Broil the bowls under high heat until the cheese is melted, golden, and bubbly. Serve immediately.

Notes

  • Caramelize onions slowly over low heat to develop deep sweetness without burning.
  • Use high-quality beef broth for best flavor, or substitute with vegetable broth for vegetarian-friendly soup.
  • Do not rush the caramelization step; patience builds the soup’s flavor foundation.
  • Toast bread slices just enough to prevent sogginess under the cheese topping.
  • Watch the soup closely while broiling so the cheese browns evenly without burning.
  • Author: Lina
  • Prep Time: 15 minutes
  • Cook Time: 1 hour 15 minutes
  • Category: Appetizers
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free

Nutrition

  • Serving Size: 1 bowl (approx. 1.5 cups)
  • Calories: 320 kcal
  • Sugar: 8 g
  • Sodium: 900 mg
  • Fat: 20 g
  • Saturated Fat: 10 g
  • Unsaturated Fat: 8 g
  • Trans Fat: 0 g
  • Carbohydrates: 20 g
  • Fiber: 3 g
  • Protein: 15 g
  • Cholesterol: 50 mg

Keywords: onion soup, Outback Steakhouse, caramelized onions, cheesy soup, comfort food, French onion soup, savory soup