First, toast your bread to your preferred toasted-ness. Preheat the broiler on high. After it's cooled, place toast on a baking sheet that can go under the broiler.

Next, in a medium saucepan, melt the butter over low heat and then whisk in the flour. Continue whisking for 2-3 minutes to cook the flour, but make sure you don't brown it. Whisk in the mustard, Worcester, cayenne, salt and pepper. Whisk until combined and pretty smooth. Pour in the beer, whisking to combine. Next pour in the cream and whisk until mixture is completely smooth. Add the cheese in about 4 batches, stirring continuously and allowing each addition of cheese to melt and become smooth before adding the next batch. This will take a few minutes.

Once the sauce is completely smooth, spoon the cheese evenly over your toast and spread it to the edges. Places cheesy toasts under the broiler for 2-4 minutes until they are as brown and bubbly as you like. Watch them carefully because they will go from golden brown to burned in the blink of an eye!

Remove from oven and let cool slightly. Top with chives and an extra drizzle of Worcestershire sauce if you'd like!