Welsh rarebit is a classic British dish that elevates the humble cheese on toast to a whole new level. This savory delight features a rich, creamy cheese sauce infused with mustard and Worcestershire sauce, poured generously over crispy toasted bread. It's a comforting and indulgent treat that's perfect for any time of the day.
While most of the ingredients for Welsh rarebit are common pantry staples, you might need to pick up Worcestershire sauce if you don't already have it. This tangy, savory sauce adds a unique depth of flavor to the cheese mixture. Additionally, make sure to use sharp cheddar cheese for the best results, as its bold flavor is essential to the dish.

Ingredients For Traditional Welsh Rarebit Recipe
Butter: Adds richness and helps create the base for the cheese sauce.
All-purpose flour: Used to thicken the cheese sauce.
Milk: Provides creaminess and helps to create a smooth sauce.
Sharp cheddar cheese: The star ingredient, offering a bold and tangy flavor.
Dijon mustard: Adds a subtle tang and depth to the sauce.
Worcestershire sauce: Brings a savory, umami flavor to the dish.
Bread: The vessel for the delicious cheese sauce, best when toasted.
Technique Tip for This Recipe
When making the cheese sauce, ensure you whisk the flour and butter mixture, known as a roux, thoroughly to avoid any lumps. Gradually adding the milk while continuously whisking will help achieve a smooth and creamy consistency. For an extra depth of flavor, consider using a combination of sharp cheddar cheese and another type of cheese, such as gruyere or parmesan.
Suggested Side Dishes
Alternative Ingredients
butter - Substitute with margarine: Margarine can be used as a dairy-free alternative and has a similar fat content to butter.
all-purpose flour - Substitute with cornstarch: Cornstarch can thicken the sauce similarly to flour, though you may need to use less of it.
milk - Substitute with unsweetened almond milk: Unsweetened almond milk is a good dairy-free alternative that won't alter the flavor significantly.
sharp cheddar cheese - Substitute with gruyere cheese: Gruyere cheese melts well and has a rich, nutty flavor that complements the dish.
dijon mustard - Substitute with yellow mustard: Yellow mustard can be used in place of dijon mustard, though it will have a slightly milder flavor.
worcestershire sauce - Substitute with soy sauce: Soy sauce can provide a similar umami flavor, though it will be saltier, so use it sparingly.
bread - Substitute with gluten-free bread: Gluten-free bread can be used for those with gluten sensitivities, and it will still toast well.
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How to Store / Freeze This Recipe
- Allow the cheese sauce to cool completely before storing. This helps prevent 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.
- If you wish to freeze the cheese sauce, pour it 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 frozen cheese sauce, thaw it in the refrigerator overnight. Reheat on the stovetop over low heat, stirring constantly until smooth and creamy.
- For the toasted bread, it's best to prepare it fresh. However, you can store leftover toasted bread in a zip-top bag at room temperature for up to 2 days.
- If you prefer to freeze the toasted bread, wrap each slice individually in plastic wrap, then place them in a freezer-safe bag. Freeze for up to 1 month.
- To reheat frozen toasted bread, toast it directly from the freezer using a toaster or oven until crisp and warm.
How to Reheat Leftovers
Preheat your oven to 350°F (175°C). Place the leftover Welsh Rarebit on a baking sheet and cover it loosely with aluminum foil. Bake for about 10-15 minutes or until the cheese sauce is bubbly and the bread is heated through.
For a quicker method, use a microwave. Place the Welsh Rarebit on a microwave-safe plate and cover it with a microwave-safe lid or another plate to prevent splattering. Heat on medium power for 1-2 minutes, checking halfway through to ensure the cheese sauce doesn’t overheat and separate.
If you have a toaster oven, this can be an excellent option. Set it to 350°F (175°C) and place the Welsh Rarebit directly on the rack or on a small baking tray. Heat for about 8-10 minutes until the cheese sauce is hot and the bread is crispy.
For a stovetop method, place a non-stick skillet over medium-low heat. Add the Welsh Rarebit and cover with a lid. Heat for about 5-7 minutes, checking occasionally to ensure the cheese sauce melts evenly and the bread doesn’t burn.
If you prefer a more gourmet touch, use a broiler. Preheat the broiler on low and place the Welsh Rarebit on a broiler-safe tray. Broil for 2-3 minutes, keeping a close eye to prevent burning, until the cheese sauce is bubbly and golden brown.
Best Tools for This Recipe
Saucepan: Use this to melt the butter and cook the flour, as well as to make the cheese sauce.
Whisk: Essential for whisking the flour into the melted butter and for gradually incorporating the milk to ensure a smooth sauce.
Measuring spoons: Use these to accurately measure out the butter, flour, mustard, and Worcestershire sauce.
Measuring cup: Necessary for measuring the milk.
Grater: Use this to grate the sharp cheddar cheese.
Spatula: Handy for stirring the cheese into the sauce until it melts and becomes smooth.
Toaster: Use this to toast the bread slices.
Knife: Useful for spreading the cheese sauce evenly over the toasted bread slices.
Cutting board: Provides a surface for any additional prep work, such as slicing the bread if needed.
How to Save Time on This Recipe
Pre-measure ingredients: Measure out butter, flour, milk, cheese, mustard, and worcestershire sauce before starting to save time during cooking.
Use pre-grated cheese: Opt for pre-grated sharp cheddar cheese to cut down on preparation time.
Toast bread simultaneously: Toast the bread slices while preparing the cheese sauce to streamline the process.
Make sauce ahead: Prepare the cheese sauce in advance and reheat gently when ready to serve.
Use a whisk: A whisk helps to quickly achieve a smooth and thickened sauce.

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 butter in a saucepan over medium heat.
- Whisk in flour and cook for 1-2 minutes.
- Gradually add milk, whisking constantly until smooth and thickened.
- Stir in cheese until melted and smooth.
- Add mustard and Worcestershire sauce, stirring to combine.
- Pour cheese sauce over toasted bread slices and serve immediately.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Recipe
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