Welsh rarebit is a classic British dish that elevates the humble cheese on toast to a whole new level. Rich, creamy, and packed with flavor, this recipe is perfect for a comforting snack or a light meal. The combination of sharp cheddar cheese, dijon mustard, and Worcestershire sauce creates a savory sauce that is simply irresistible when poured over crispy toasted bread.
While most of the ingredients for Welsh rarebit are common pantry staples, you might need to pick up a few items if they are not already in your kitchen. Dijon mustard and Worcestershire sauce are essential for adding depth and complexity to the cheese sauce. Make sure to get a good quality sharp cheddar cheese for the best flavor.

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 helps to create a smooth sauce.
Sharp cheddar cheese: The main flavor component, providing a tangy and rich taste.
Dijon mustard: Adds a subtle kick and depth of flavor.
Worcestershire sauce: Enhances the umami and adds a savory note.
Bread: The base for the dish, best when toasted to a golden brown.
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.
Suggested Side Dishes
Alternative Ingredients
butter - Substitute with margarine: Margarine can provide a similar fat content and texture, making it a suitable alternative for creating the roux.
all-purpose flour - Substitute with whole wheat flour: Whole wheat flour can be used to create a roux with a slightly nuttier flavor and added nutritional benefits.
milk - Substitute with unsweetened almond milk: Unsweetened almond milk can be used for a dairy-free option while maintaining a similar consistency.
sharp cheddar cheese - Substitute with gruyere cheese: Gruyere cheese offers 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 with a bit more texture.
worcestershire sauce - Substitute with soy sauce: Soy sauce can provide a similar umami flavor, though it will be less complex.
bread - Substitute with sourdough bread: Sourdough bread offers a robust flavor and a chewy texture that pairs well with the cheese sauce.
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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. For best results, use a container that minimizes air space to reduce the risk of freezer burn.
- Store the cheese sauce in the refrigerator if you plan to use it within 3-4 days. For longer storage, place the container in the freezer, where it can be kept for up to 2 months.
- To reheat refrigerated cheese sauce, place it in a saucepan over low heat, stirring frequently until it returns to a smooth consistency. If the sauce appears too thick, add a splash of milk to thin it out.
- For frozen cheese sauce, thaw it in the refrigerator overnight. Once thawed, reheat using the same method as for refrigerated sauce.
- If you have leftover toasted bread, store it in a bread box or airtight container at room temperature for up to 2 days. Avoid refrigerating bread, as it can become stale more quickly.
- For longer storage, freeze the toasted bread slices in a single layer on a baking sheet until solid, then transfer to a freezer-safe bag or container. Frozen bread can be kept for up to 3 months.
- To reheat frozen toasted bread, place the slices directly in a toaster or toaster oven until warmed through and crispy.
- When ready to serve, reassemble the Welsh rarebit by reheating the cheese sauce and pouring it over the reheated toasted bread. Enjoy immediately for the best texture and flavor.
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 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 doesn't overcook.
If you prefer a stovetop method, heat a non-stick skillet over medium-low heat. Place the leftover Welsh rarebit in the skillet and cover with a lid. Heat for about 5-7 minutes, flipping halfway through to ensure even reheating.
For a crispier option, 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 crisp.
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 melted butter and for ensuring a smooth sauce when adding the milk.
Measuring spoons: Necessary for accurately measuring the butter, flour, dijon mustard, and Worcestershire sauce.
Measuring cup: Use this to measure the milk.
Grater: Required for grating the sharp cheddar cheese.
Toaster: Toast the bread slices to provide a crispy base for the cheese sauce.
Spatula: Handy for stirring the cheese sauce to ensure it is smooth and well-mixed.
Cutting board: Useful for placing the toasted bread slices before pouring the cheese sauce over them.
Knife: Can be used to cut the toasted bread slices if needed.
Serving plate: Place the finished Welsh rarebit on this for serving.
How to Save Time on Making This Recipe
Pre-measure ingredients: Measure and prepare all ingredients before you start cooking to streamline the process.
Use pre-grated cheese: Save time by using pre-grated cheddar cheese instead of grating it yourself.
Toast bread simultaneously: Toast the bread while you prepare the cheese sauce to save time.
Microwave milk: Warm the milk in the microwave before adding it to the sauce to speed up the thickening process.
Double the recipe: Make a larger batch of cheese sauce and store leftovers for a quick meal later.
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 thickened.
- Stir in cheese, mustard, and Worcestershire sauce until smooth.
- Pour cheese sauce over toasted bread slices and serve immediately.
Nutritional Value
Keywords
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