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Welsh Rarebit

Welsh Rarebit is basically a decadent melted cheese sauce to be ladled over bread. Follow our recipe to make sure your version is low FODMAP.

Course: Appetizer, lunch, Sauce, Snack
Cuisine: American, English
Prep Time: 5 minutes
Cook Time: 15 minutes
Total Time: 20 minutes
Makes: 8 Servings
Calories: 189 kcal
Author: Dédé Wilson


  • 8, 1/2 inch (12 mm) slices low-FODMAP sourdough bread, about 4-inches long by 2 1/2-inches wide (10 cm by 6 cm) or equivalent low-FODMAP gluten-free bread (will be gluten-free with this option)
  • 1 tablespoon unsalted butter
  • 1 tablespoon low-FODMAP gluten-free all-purpose flour
  • 1/2 cup (120 ml) ale or Guinness for stronger flavor, at room temperature
  • 1/4 cup (60 ml) lactose-free whole milk, at room temperature, such as Organic Valley
  • 1 teaspoon dry mustard
  • 1 teaspoon Worcestershire sauce
  • Freshly ground black pepper
  • 6 ounces (170 g) sharp cheddar cheese, grated, such as Organic Valley Raw Cheddar Cheese
  • 1 large egg yolk


  1. Toast the bread either in a toaster or on a sheet pan under the broiler; make sure both sides get toasted. We like them well toasted to stand up to the rich sauce. Place individual servings of toast on warmed plates, ready to receive sauce.
  2. Melt the butter in a small saucepan over low-medium heat, then whisk in flour and cook for about 1 minute, whisking often, to remove the raw flour taste. Whisk in beer, milk, dry mustard, Worcestershire sauce and a few grinds of black pepper. Bring to a simmer, whisking frequently, and cook until smooth, about 30 seconds more. Whisk in the shredded cheese, bring back to a simmer, and cook and whisk until very smooth and combined, about 1 more minute. Whisk in egg and cook for about 15 seconds more.
  3. Ladle over toast and serve immediately.



  • Branch out with your cheeses! Any of the following hard cheeses are low-FODMAP and would make a Welsh guest happy: double Gloucester, Cheshire, Lancashire or Caerphilly.
Nutrition Facts
Welsh Rarebit
Amount Per Serving
Calories 189 Calories from Fat 108
% Daily Value*
Fat 12g18%
Saturated Fat 1g5%
Sodium 273mg11%
Potassium 6mg0%
Carbohydrates 14g5%
Fiber 1g4%
Sugar 1g1%
Protein 7g14%
Calcium 20mg2%
Iron 0.1mg1%
* Percent Daily Values are based on a 2000 calorie diet.