01 -
Turn the oven on to 375°F (190°C). Use butter or a cooking spray to lightly coat an 8x8-inch pan.
02 -
Grab a little bowl, mix the sauerkraut (squeeze it really dry first) with the Thousand Island dressing, and put it aside for later.
03 -
Take the crescent roll dough and split it into two parts. Push the seams together on one of the halves until smooth, then roll it out into a square about 12 inches wide on a surface sprinkled with just a bit of flour.
04 -
Lay the rolled-out dough in your prepared pan to cover the bottom completely. Pop it in the oven for about 8-10 minutes, until it looks slightly golden.
05 -
Pull the base crust out once it’s pre-baked. Start layering with 4 slices of Swiss cheese, then add the corned beef, followed by the sauerkraut mix. Top it all off with the other 4 slices of Swiss cheese.
06 -
Work with the second half of the dough now. Pinch and seal any lines in it. Roll it out to about a 9-inch square and spread it over the layers, making sure everything is covered.
07 -
Close up the edges by pinching the top and bottom dough together around the sides. Use a pastry brush to coat the top with the beaten egg white.
08 -
Slide the dish back in the oven and let it bake for around 15-20 minutes. The top should be crisp, golden, and the cheese melted.
09 -
Once baked, let it sit for 5 minutes to firm up. Then slice it up for easier serving.