01 -
Preheat oven to 350°F (177°C). Lightly coat an 11×7-inch or 9×13-inch baking dish with cooking spray.
02 -
Cut 4 slices of rye bread into 2-inch cubes and arrange evenly in the bottom of the prepared baking dish. Pulse the remaining 2 slices of rye bread into fine breadcrumbs and reserve for topping.
03 -
Distribute half of the pastrami or corned beef evenly over the bread cubes. Top with drained sauerkraut and chopped dill pickles.
04 -
Sprinkle with 1 teaspoon caraway seeds and evenly layer 2 cups shredded Swiss cheese.
05 -
Layer the remaining pastrami or corned beef over the cheese and press gently to compact. Top with the remaining 2 cups shredded Swiss cheese and 1 teaspoon caraway seeds.
06 -
In a bowl, whisk milk, beaten eggs, creamy dressing, and yellow mustard until fully blended. Pour evenly over the casserole to soak the layers.
07 -
Sprinkle reserved rye breadcrumbs across the surface. Cover with foil and bake for 45 minutes.
08 -
Remove from oven and let rest 5 minutes before slicing. Serve warm.