Preheat the oven to 350°F (177°C). Spray a 9x13 baking dish with nonstick spray.
Unroll one can of crescent roll dough and press it into the bottom and slightly up the sides of the 9x13 pan. Keep the other can in the refrigerator for now.
2 cans refrigerated crescent dough sheets
Bake the dough for 8 minutes, to par cook the crust. Remove from the oven and set aside.
While the crust is baking, place the ground beef and onion in a large skillet and cook over medium heat until the beef is browned and the onion is soft. Drain any excess fat from the pan.
1 ½ pounds lean ground beef, 1 cup finely chopped onion
Add the minced garlic and cabbage to the skillet and cook for 2-3 minutes, or until the cabbage has wilted.