01 -
Preheat oven to 375°F (190°C). Grease a 9x13 inch baking dish.
02 -
In a large skillet, melt butter over medium heat. Add chopped onion and sauté until translucent and softened, about 4-5 minutes.
03 -
Add ground beef to the skillet and season with salt and pepper. Cook until browned, breaking it up with a spoon as it cooks, about 6-8 minutes.
04 -
Stir in the shredded cabbage and continue cooking until the cabbage is tender and golden, about 7-10 minutes. Remove from heat.
05 -
Roll out one package of crescent roll dough in the prepared 9x13 inch dish, pressing the seams together to form a solid crust covering the bottom and slightly up the sides.
06 -
Spread the beef and cabbage mixture evenly over the crescent roll crust. Top with the shredded mozzarella cheese.
07 -
Roll out the second package of crescent roll dough and carefully place it over the filling, pressing the seams together to seal.
08 -
Bake for 25-30 minutes or until the top crust is golden brown and flaky.
09 -
Let the casserole cool for 5-10 minutes before slicing and serving. This helps it hold together better when cut.