Welsh rarebit is a classic British dish that elevates the humble cheese on toast to a whole new level. This savory treat features a rich, creamy cheese sauce poured over toasted bread, making it a comforting and indulgent snack or light meal. Perfect for a cozy evening or a quick lunch, this recipe is sure to become a favorite.
While most of the ingredients for Welsh rarebit are common pantry staples, there are a few that might not be as familiar. Worcestershire sauce is a fermented liquid condiment that adds a tangy, umami flavor to the dish. Dijon mustard is a smooth, mildly spicy mustard that enhances the cheese sauce. Both of these can be found in the condiment aisle of most supermarkets.

Ingredients For Real Welsh Rarebit Recipe
Butter: Adds richness and helps create the base for the cheese sauce.
All-purpose flour: Thickens the sauce to the perfect consistency.
Milk: Provides a creamy texture and helps blend the flavors together.
Sharp cheddar cheese: The star of the dish, offering a bold and tangy cheese flavor.
Dijon mustard: Adds a subtle kick and depth to the cheese sauce.
Worcestershire sauce: Brings a complex, savory note to the dish.
Bread: Serves as the base for the cheese sauce, best when toasted.
Salt and pepper: Enhances the overall flavor of the dish.
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.
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Alternative Ingredients
butter - Substitute with margarine: Margarine can provide a similar texture and flavor, making it a suitable alternative for those avoiding dairy.
all-purpose flour - Substitute with whole wheat flour: Whole wheat flour can add a slightly nutty flavor and more fiber, though it may make the sauce a bit denser.
milk - Substitute with unsweetened almond milk: Unsweetened almond milk can be used for a dairy-free option, though it may slightly alter the flavor.
sharp cheddar cheese - Substitute with gruyere cheese: Gruyere cheese melts well and has a rich, nutty flavor that can complement the dish similarly to sharp cheddar.
dijon mustard - Substitute with whole grain mustard: Whole grain mustard has a similar tangy flavor and can add a bit of texture to the sauce.
worcestershire sauce - Substitute with soy sauce: Soy sauce can provide a similar umami flavor, though it may make the dish slightly saltier.
bread - Substitute with sourdough bread: Sourdough bread has a robust flavor and firm texture that can hold up well to the rich sauce.
salt - Substitute with sea salt: Sea salt can provide a similar level of seasoning with a slightly different mineral profile.
pepper - Substitute with white pepper: White pepper can offer a similar spiciness without altering the color of the sauce.
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How to Store / 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 stove 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.
- Label the container with the date and contents. This helps you keep track of how long it has been stored.
- Freeze the cheese sauce for up to 2 months. Thaw in the refrigerator overnight before reheating.
- When reheating frozen cheese sauce, warm it slowly on the stove over low heat, stirring constantly to restore its smooth texture.
- Toast the bread fresh when ready to serve. Avoid freezing toasted bread as it can become soggy upon thawing.
- If you must store toasted bread, let it cool completely, then place it in a resealable plastic bag. Store at room temperature for up to 2 days.
- To refresh stored toasted bread, reheat in a toaster or oven until crisp before topping with the reheated cheese sauce.
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 cheese sauce from drying out. Bake for about 10-15 minutes or until heated through.
For a quicker method, use a microwave. Place the leftover 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 1-2 minutes, checking halfway through to ensure it heats evenly.
If you prefer a stovetop method, heat a non-stick skillet over low to medium heat. Place the leftover Welsh rarebit in the skillet and cover with a lid. Heat for about 5-7 minutes, flipping halfway through, until the cheese sauce is melted and the bread is warmed.
For an extra crispy texture, use a toaster oven. Preheat the toaster oven to 350°F (175°C). Place the leftover Welsh rarebit on the toaster oven tray and heat for about 10 minutes, or until the cheese sauce is bubbly and the bread is crispy.
If you have an air fryer, preheat it to 320°F (160°C). Place the leftover Welsh rarebit in the air fryer basket. Heat for about 5-7 minutes, checking halfway through to ensure it heats evenly and the cheese sauce is melted.
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 blending the flour into the butter and for ensuring a smooth sauce as you add the milk.
Measuring spoons: Necessary for accurately measuring the butter, flour, mustard, and Worcestershire sauce.
Measuring cup: Use this to measure the milk and grated cheese.
Grater: Needed to grate the sharp cheddar cheese.
Toaster: Use this to toast the bread slices before pouring the cheese sauce over them.
Spatula: Handy for stirring the cheese sauce and ensuring it is smooth.
Cutting board: Useful for placing the bread slices while you toast them.
Knife: Needed to cut the bread if it is not pre-sliced.
Serving plate: Place the toasted bread slices on this before pouring the cheese sauce over them.
How to Save Time on Making This Recipe
Pre-measure ingredients: Measure out butter, flour, milk, and cheese before starting to save time during cooking.
Use pre-grated cheese: Opt for pre-grated sharp cheddar cheese to cut down on prep time.
Toast bread in advance: Toast the bread slices while preparing the cheese sauce to streamline the process.
Microwave the milk: Slightly warm the milk in the microwave before adding it to the roux to speed up thickening.
Batch cooking: Double the sauce recipe and refrigerate leftovers for a quick meal later.

Real 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
- to taste Salt and pepper
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 the mixture thickens.
- Add the grated cheese, mustard, and Worcestershire sauce. Stir until the cheese is melted and the sauce is smooth.
- Season with salt and pepper to taste.
- Pour the cheese sauce over the toasted bread slices and serve immediately.
Nutritional Value
Keywords
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