Welsh rarebit is a classic British dish that transforms simple toasted bread into a savory delight. The rich, creamy cheese sauce, infused with a hint of mustard and Worcestershire sauce, makes for a comforting and satisfying meal. Perfect for a quick lunch or a cozy dinner, this traditional recipe is sure to become a favorite.
While most of the ingredients for Welsh rarebit are common pantry staples, you might need to pick up Dijon mustard and Worcestershire sauce if they aren't already in your kitchen. These two ingredients add a unique depth of flavor to the cheese sauce, making it truly special.

Ingredients For Traditional Welsh Rarebit Recipe
Butter: Adds richness and helps create the base of the sauce.
All-purpose flour: Used to thicken the sauce.
Milk: Provides creaminess and smooth texture to the sauce.
Sharp cheddar cheese: The main flavor component, offering a tangy and robust taste.
Dijon mustard: Adds a subtle tang and complexity to the sauce.
Worcestershire sauce: Brings a savory umami flavor that enhances the overall taste.
Bread: The base for the dish, best when toasted to a golden brown.
Technique Tip for This Recipe
To achieve a perfectly smooth and creamy cheese sauce, ensure that you whisk the milk in gradually. Adding the milk too quickly can result in lumps. Also, make sure to keep the heat at medium to prevent the butter and flour mixture from burning, which can give the sauce a bitter taste.
Suggested Side Dishes
Alternative Ingredients
butter - Substitute with margarine: Margarine can be used as a dairy-free alternative and provides a similar texture and flavor.
all-purpose flour - Substitute with cornstarch: Cornstarch can thicken the sauce similarly to flour, but use half the amount.
milk - Substitute with unsweetened almond milk: Almond milk is a good dairy-free alternative that won't alter the flavor significantly.
sharp cheddar cheese - Substitute with gruyere cheese: Gruyere has a similar melting quality and a rich, nutty flavor that complements the dish.
dijon mustard - Substitute with whole grain mustard: Whole grain mustard provides a similar tangy flavor and texture.
worcestershire sauce - Substitute with soy sauce: Soy sauce can provide a similar umami flavor, but use a bit less as it is saltier.
bread - Substitute with sourdough bread: Sourdough offers a robust flavor and sturdy texture that holds up well to the cheese sauce.
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How to Store or Freeze This Recipe
Allow the cheese sauce to cool completely before storing. This prevents condensation, which can make the sauce watery.
Transfer the cooled cheese sauce into an airtight container. Ensure the container is sealed tightly to maintain freshness.
Store the cheese sauce in the refrigerator for up to 3 days. Reheat gently on the stovetop over low heat, stirring frequently to prevent separation.
For freezing, pour the cooled cheese sauce into a freezer-safe container, leaving some space at the top for expansion. Seal the container tightly.
Label the container with the date to keep track of its freshness. The cheese sauce can be frozen for up to 2 months.
To reheat the frozen cheese sauce, thaw it in the refrigerator overnight. Reheat on the stovetop over low heat, stirring constantly until smooth and heated through.
Toast the bread slices fresh each time you serve the dish. This ensures the bread remains crispy and complements the creamy cheese sauce perfectly.
If you have leftover toasted bread, store it in an airtight container at room temperature for up to 2 days. Re-toast in the oven or toaster for a few minutes before serving.
Avoid freezing toasted bread as it can become soggy upon thawing and reheating.
How to Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the leftover Welsh rarebit on a baking sheet. Cover it loosely with aluminum foil to prevent the bread from drying out. Heat for about 10-15 minutes, or until the cheese sauce is bubbly and the bread is warmed through.
For a quicker method, use a microwave. Place the Welsh rarebit on a microwave-safe plate. Cover it with a microwave-safe lid or another plate to retain moisture. Heat on medium power for about 1-2 minutes, checking halfway through to ensure it heats evenly.
If you have a toaster oven, this can be a great option. Set it to 350°F (175°C) and place the Welsh rarebit inside. Heat for about 10 minutes, or until the cheese sauce is hot and the bread is crispy.
For a stovetop method, place the Welsh rarebit in a skillet over low heat. Cover the skillet with a lid to trap the heat and moisture. Heat for about 5-7 minutes, or until the cheese sauce is melted and the bread is warmed through.
Best Tools for This Recipe
Saucepan: Use this to melt the butter and cook the flour, as well as to prepare the cheese sauce.
Whisk: Essential for whisking the flour into the melted butter and for ensuring the milk is smoothly incorporated.
Measuring spoons: Necessary for accurately measuring the butter, flour, mustard, and Worcestershire sauce.
Measuring cup: Use this to measure the milk.
Grater: Required for grating the sharp cheddar cheese.
Spatula: Handy for stirring the cheese sauce until it is smooth.
Toaster: Needed to toast the bread slices.
Knife: Useful for spreading the cheese sauce evenly over the toasted bread slices.
Cutting board: Provides a surface for grating cheese and preparing other ingredients.
Serving plate: For serving the finished Welsh rarebit.
How to Save Time on This Recipe
Pre-measure ingredients: Measure out butter, flour, milk, cheese, mustard, and worcestershire sauce before starting to streamline the cooking process.
Use pre-grated cheese: Opt for pre-grated sharp cheddar cheese to save time on grating.
Toast bread in advance: Toast the bread slices while preparing the cheese sauce to have everything ready simultaneously.
Make a roux ahead: Prepare the butter and flour mixture (roux) in advance and store it, so you only need to add milk and cheese when ready.

Traditional Welsh Rarebit Recipe
Ingredients
Main Ingredients
- 2 tablespoon Butter
- 2 tablespoon All-purpose flour
- 1 cup Milk
- 1 cup Sharp cheddar cheese, grated
- 1 teaspoon Dijon mustard
- 1 teaspoon Worcestershire sauce
- 4 slices Bread, toasted
Instructions
- Melt the butter in a saucepan over medium heat.
- Whisk in the flour and cook for 1-2 minutes.
- Gradually add the milk, whisking constantly until smooth and thickened.
- Add the grated cheese, mustard, and Worcestershire sauce. Stir until the cheese is melted and the sauce is smooth.
- Pour the cheese sauce over the toasted bread slices and serve immediately.
Nutritional Value
Keywords
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