Skinny Welsh Rarebit

4 slices Crusty Wheat Bread, Toasted
2 T. Butter
2T. flour
1/3 cup milk
1/2 cup beer
1 tsp. dry mustard heaping
1/2 tsp. paprika
1/4 tsp. cayenne
2 dashes Worcestershire sauce
1 cup extra sharp cheddar cheese, grated
1 whole egg yolks
fresh chives Chopped

Melt butter in saucepan over low heat. Sprinkle in flour and whisk together until combined. Cook for about 2 minutes. Pour in milk and beer, whisking constantly and cook another minute. Add mustard, paprika and cayenne and whisk. Add cheese and continue to whisk slowly, cooking and whisking until cheese is melted and sauce is smooth. Remove from heat, whisk in egg yolk and serve over crusty bread. Top with chives for garnish.