Welsh rarebit is a classic British dish that transforms simple toasted bread into a rich and savory delight. This recipe combines a creamy cheese sauce with a hint of mustard and Worcestershire sauce, making it a perfect comfort food for any time of the day.
While most of the ingredients for this recipe are common pantry staples, you might need to pick up dijon mustard and Worcestershire sauce if you don't already have them at home. These ingredients add a unique depth of flavor to the cheese sauce, so don't skip them.

Ingredients For Real Welsh Rarebit Recipe
Butter: Adds richness and helps create the base of the sauce.
All-purpose flour: Used to thicken the cheese sauce.
Milk: Provides the creamy texture for the sauce.
Sharp cheddar cheese: The main flavor component, giving the sauce its cheesy goodness.
Dijon mustard: Adds a tangy kick to the sauce.
Worcestershire sauce: Adds a savory depth and umami flavor.
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 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 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 and texture.
all-purpose flour - Substitute with cornstarch: Cornstarch can thicken the sauce similarly to flour, though you may need to use slightly less.
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 has a similar melting quality and a strong flavor that can mimic sharp cheddar.
dijon mustard - Substitute with whole grain mustard: Whole grain mustard has a similar tangy flavor and can add a bit of texture.
worcestershire sauce - Substitute with soy sauce: Soy sauce provides a similar umami flavor, though it may be slightly saltier.
bread - Substitute with gluten-free bread: Gluten-free bread is a suitable alternative for those with gluten intolerance or celiac disease.
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How to Store or Freeze This Dish
- 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 there's minimal air to prevent oxidation and 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 avoid 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 to keep track of its freshness. The cheese sauce can be frozen for up to 2 months.
- When ready to use, thaw the cheese sauce overnight in the refrigerator. Reheat slowly on the stove, stirring constantly to restore its creamy texture.
- Toast the bread fresh each time you serve the dish. Avoid freezing the bread with the cheese sauce on it, as it can become soggy.
- For a quick meal, prepare extra cheese sauce and freeze in individual portions. This way, you can defrost and reheat only what you need.
- If the reheated cheese sauce appears too thick, add a splash of milk and stir until it reaches the desired consistency.
- Always taste the reheated cheese sauce and adjust the seasoning if necessary, as freezing can sometimes dull the flavors.
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. 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 it heats evenly.
If you prefer a crispier texture, use a toaster oven. 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 10 minutes, or until the cheese sauce is hot and the bread is slightly crispy.
For those with an air fryer, preheat it to 350°F (175°C). Place the Welsh rarebit in the basket and heat for 5-7 minutes. This method will give you a nice, crispy finish while keeping the cheese sauce perfectly melted.
If you have a stovetop griddle or skillet, you can reheat the Welsh rarebit by placing it cheese-side up on the griddle over low heat. Cover with a lid to help the cheese melt evenly. Heat for about 5-7 minutes, or until the cheese sauce is hot and bubbly.
Essential Tools for Making Welsh Rarebit
Saucepan: Use this to melt the butter and cook the flour to make a roux, and then to prepare the cheese sauce.
Whisk: Essential for whisking the flour into the melted butter and for gradually incorporating the milk to ensure a smooth, lump-free sauce.
Measuring spoons: Necessary for accurately measuring the butter, flour, dijon mustard, and worcestershire sauce.
Measuring cup: Use this to measure the milk and grated cheddar cheese.
Grater: Needed to grate the sharp cheddar cheese if it isn't pre-grated.
Toaster: Toast the bread slices to a perfect golden brown.
Spatula: Handy for stirring the cheese sauce until the cheese is fully melted and the sauce is smooth.
Cutting board: Use this as a surface to grate the cheese or to place the toasted bread slices.
Knife: Useful for cutting the bread if you need to trim it or cut it into smaller pieces before toasting.
Serving plate: Place the toasted bread slices on this before pouring the cheese sauce over them.
Time-Saving Tips for This Recipe
Pre-measure ingredients: Measure out butter, flour, milk, and cheese before starting to streamline the cooking process.
Use pre-grated cheese: Save time by using pre-grated sharp cheddar cheese instead of grating it yourself.
Toast bread simultaneously: Toast the bread slices while preparing the cheese sauce to have everything ready at the same time.
Microwave option: Use the microwave to melt butter and cheese quickly if you're in a rush.

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
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.
- Add grated cheese, mustard, and Worcestershire sauce. Stir until cheese is melted and sauce is smooth.
- Pour cheese sauce over toasted bread slices and serve immediately.
Nutritional Value
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