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Brennans Market

Brennan's Market

Wisconsin's Premier Market for Outstanding Flavor!

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Irish Onion Soup

Tags:soup, onion, irish, st pats, st patrick's day

Serving Size:Serves 4


  • 2 tablespoons unsalted butter
  • 2 medium yellow onions, halved lengthwise and sliced crosswise into 1/2-inch thick pieces
  • 3 tablespoons Irish Whiskey
  • 1 tablespoon granulated sugar
  • 1 1/2 teaspoons, plus a a pinch kosher salt
  • 1 1/2 tablespoons all purpose flour
  • 1 clove garlic, finely chopped
  • 1/2 cup dark beer, Guinness or micro like Hales El Dazzle, Millstream Stout
  • 6 1/2 cups beef stock or broth
  • 1/2 teaspoon freshly ground black pepper
  • 8 - 3/4-inch thick slices baguette, day-old
  • eight 1/4-inch thick slices Sharp Cheddar, Irish or Wisconsin

Adapted From:tasting table


Onion soup with Irish flair. Perfect for those chilly St Patty's days.


In a large skillet set over medium heat, melt the: Unsalted butter
Once the butter has melted and the white foam subsides, add the:Sliced onions
Cook, using a wooden spoon to stir occasionally, until the onions are soft and golden, about 20 minutes.

Add the:Irish whiskey
If you have a gas burner, carefully tilt the pan toward the flame to flambé the onion-and-whiskey mixture. If you have an electric or induction cooktop, use a long match to flambé the whiskey (or you can skip the flambéing altogether). Stir in the sugar and cook, stirring occasionally, until the onions turn a darker shade of brown, 4 to 6 minutes. Stir in pinch of salt, flour and finely chopped garlic.  Cook until the garlic is fragrant, about 2 minutes. Then, while stirring, pour in the beer. Simmer, stirring occasionally, until the dark beer is reduced by one-third, about 5 minutes.

Add the Beef stock, remaining 1½ teaspoons kosher salt, and black pepper
Bring the soup to a simmer. Reduce the heat to medium-low and cook for 20 minutes.

Adjust an oven rack to the upper-middle position and heat the broiler to high. Divide the soup among 4 oven-safe bowls and set them on a rimmed baking sheet. To each bowl, add 2 bread slices Cover each slice of bread with 2 pieces of the sliced sharp cheddar

Set the rimmed baking sheet on the upper-middle oven rack and broil until the cheese is melted, golden and bubbling, 3 to 5 minutes (watch the cheese closely, as broiler intensities vary). Remove from the oven and serve immediately.
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