Thoroughly cook ground beef and warm up can of beans. Drain out the excess grease from beef and mix beef with about a fourth of your container of salsa or add salsa to your own preferences. You will need a pan to bake your lasagna in…at least one that can fit your tortillas.
Preheat oven to 350 degrees F. Spread half of beef in bottom of your pan, cover with 2 tortillas. Spread all of your beans on the tortilla, cover with 2 more tortillas. Cover tortillas with about half your cheese or less if you prefer. Cover cheese with 2 more tortillas. Cover tortillas with the rest of your beef, and cover with two more tortillas. (Optional: Cover layer with the rest of salsa or as much as you want to put on there and cover with two more tortillas.) Cover this last layer with cheese.
Put into oven for 15 minutes. Let it stand for 5 minutes, and dig in!