Not Welsh Rarebit

What is it with the British and toast?  They are now clearly a leader of the modern word in culinary prowess, completely turning the old-world joke about bland British food on its head.  You want good food?  Go to Britain.  But, guys, get with your toast!  Honestly I can't help smiling at how they still use those silly toast racks, which my fellow travelers and I call "toast chillers".  I don't get it. Why would you want to chill your toast so quickly and efficiently as those cooling radiators do?!

Oh well, the British do actually know what to do with their toast.  And this is a take on some nice open-face "melties" you might come across in the UK.  I don't really know what Welsh Rarebit
actually is, though I know it has something to do with toast, lots of melted cheese, and maybe even some Worcestershire sauce and horseradish.  This is not meant to be Welsh rarebit - although, who knows, it might be, because I actually don't know what Welsh Rarebit is!  But it has many British elements in it, and is as warm and cozy as an Agatha Christie murder mystery enjoyed in front of a crackling fireplace on a cold clammy wet autumn day. So British.
4 slices whole meal bread (that's British for whole wheat)
1 Tbsp Worcestershire sauce
1 10-oz package fresh button mushrooms, cleaned and thickly sliced
1/4 cup good real mayonnaise
2 Tbsp prepared horseradish
8 slices savory cheese like Stilton, aged cheddar or jalapeño Monterey Jack
1-2 fresh ripe tomatoes, enough for 8 generous slices
Some dried dill weed for garnish

First the mushrooms.  Sauté them in a large skillet in a bit of oil.  After they release their water, sprinkle in the Worcestershire sauce and continue cooking until the mushrooms begin to brown and dry up a bit.

Now toast your bread, but only lightly because they will cook further in the oven.  Whisk together the mayonnaise and horseradish.  Lay your toast down on a roasting pan and spread the mayo sauce evenly on the four slices.  Distribute the mushrooms evenly over the toast followed by the cheese and tomatoes.  Sprinkle on the dill weed.

Broil carefully (I use a toaster oven) for about 5 minutes, until the cheese melts and begins to brown and bubble, and the tomatoes soften. 

Serve toasties with little cornichon pickles, which the Brits will insist are called gherkins!

Serves 4 as a snack at the very least.

 Buckingham Palace: God Save the Queen