Ingredients

Steps

• Preheat the grill to high.
• Melt the butter in a saucepan and stir in the flour for 30 seconds.
• Slowly add the beer and simmer for 2 to 3 minutes until thickened.
• Stir in the cheese, egg yolk, mustard, Worcestershire sauce, and cayenne until melted.
• Season with pepper and allow the mixture to cool slightly.
• Toast the bread on both sides until golden-brown.
• Spread the sauce thickly over the bread slices.
• Grill for 20 to 30 seconds until bubbling.