Butcher's Sandwich

Grrrrrgh!
Course : Sandwiches
From: HungryMonster.com
Serves: 8
 

Ingredients:

16 slices rye bread
1 stick butter
8 slices Swiss cheese
8 slices liverwurst
8 slices red onion
2 tablespoons Dijon or Deli mustard
 

Preparation:

Butter 8 slices of bread. Top each with a slice of cheese, liverwurst, and onion. Spread mustard on the remaining slices and top each sandwich.