Preheat oven to 350°F. Grease an 8-inch round baking dish.
In a skillet, cook ground beef over medium heat until browned. Drain excess grease.
Stir in taco seasoning and water, simmering until well combined. Mix in salsa con queso.
Place one flour tortilla at the bottom of the dish. Add a layer of beef mixture, then sprinkle with cheese.
Repeat layers until all ingredients are used, finishing with a top layer of cheese.
Bake for 15-20 minutes, until cheese is melted and slightly golden.
Let cool for a few minutes before slicing. Serve with sour cream, salsa, or guacamole.