Preheat oven to 350 degrees. Saute ground beef and onions and until ground beef is lightly brown and onions are translucent. Stir in remaining ingredients except tortillas and cheese.
Spread 1/3 of meat mixture in 9x13 baking dish. Alternate layers between tortillas and meat mixture beginning and ending with meat mixture. Sprinkle top with cheese and bake for 35 minutes or until bubbly.