Sautee onion in a 1-2 Tbsp. oil or butter, brown meat in skillet, season meat as desired, drain. Add cabbage to pan and cook until cabbage is soft, approximately 10 minutes.
Place half of the crescent roll dough in the bottom of an 8"x8" or 9"x9" lightly greased pan. Mix the drained meat, cabbage, rice, carrots together and put on top of the dough. Add cheese if desired, then top with remaining dough. Bake at 350 degrees for 20 minutes or until crescent roll dough is medium golden brown.