Assemble KitchenAid® Rotor Slicer/Shredder using fine shredder cone (No. 1) and attach to the KitchenAid® Stand Mixer. Turn to Speed 4 and shred Swiss cheese into mixer bowl. Add bacon, evaporated milk, Worcestershire sauce and pepper. Attach bowl and flat beater to mixer. Turn to Speed 4 and beat 1 minute. Stop and scrape bowl. Turn to Speed 6 and beat 30 seconds.
Top each bread round with 1 teaspoon of cheese mixture and place on greased baking sheets. Bake at 400°F for 8 to 10 minutes or until lightly browned. Serve immediately.