4 slices whole grain bread, sliced thick
2 tablespoons salted butter
2 tablespoons all-purpose flour
1/3 cup dark ale, room temperature
3/4 teaspoon Worcestershire sauce
1 teaspoon mustard powder
8 ounces white cheddar cheese, grated
Toast the bread on both sides under broiler or toaster. It should be super toasty.
Add butter to a saucepan, turn heat on medium. When the butter is melted and sizzling, whisk in the flour and cook for a minute, stirring.
Slowly whisk in the ale until there are no lumps. Whisk in the Worcestershire sauce and mustard powder. Use a spatula and stir in the cheese until it is completely melted and the sauce is smooth.
Remove from the heat and transfer to a bowl to slightly cool and thicken.
Spread the cheese sauce on all of the slices of bread. Broil until bubbly, browned and melted. Serve immediately.