Preheat oven to 350f degrees. Spray 11x7 baking dish with nonstick cooking spray. Take four slices of rye bread and cut them into 2-inch cubes.
Place remaining slices of rye bread into food processor and pulse into fine breadcrumbs and set aside.
Spread cubed bread into the bottom of the prepared baking dish.
Cover evenly with half of the pastrami.
Then evenly top with drained sauerkraut, chopped pickles and 1 teaspoon caraway seeds.
Sprinkle 2 cups of shredded Swiss cheese on top of sauerkraut layer.
Next, top with remaining pastrami. Push down on all the layers to help compact it a bit.
Sprinkle remaining 2 cups Swiss cheese and 1 teaspoon caraway seeds on top of pastrami.
In a medium bowl, whisk together milk, eggs, thousand island dressing and mustard.
Pour mixture evenly over the casserole.
Top with breadcrumbs.
Cover with foil.
Bake for 45 minutes.
Remove from oven, let rest for 5 minutes then slice and serve.
Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.