Step 1

Whisk together the mayo, ketchup, and sweet relish in a small bowl.

Step 2

Chop the corned beef and add to a frying pan to crisp up and heat through (approximately 5 minutes).

Step 3

Move the corned beef to one side of the pan, and add the sauerkraut to the other side of the pan to warm through (approximately 2 minutes).

Step 4

Set aside until ready to assemble the burgers.

Step 5

Preheat a grill pan (or frying pan) over medium high heat.

Step 6

Mix the ground beef with the dehydrated onion, worcestershire, and salt in a mixing bowl.

Step 7

Form 4 equal-sized patties.

Step 8

Spray cooking spray in the pan, and cook the burgers for 3 minutes on each side. This will make medium-well burgers. Cook longer if desired.

Step 9

Remove the grill pan from the heat.

Step 10

Add a slice of Swiss cheese on top of each burger.

Step 11

Cover the pan with a lid to allow the cheese to melt.

Step 12

Lay out a hamburger bun. Add 1.5 tablespoons of the thousand island to the bun, top and bottom.

Step 13

Lay a patty with cheese on the bun.

Step 14

Top with 2 tablespoons of the sauerkraut, and 2 tablespoons of the corned beef.