Preheat the oven to 350 degrees F. Lightly grease an 8x8” oven-safe dish.
Brown the ground beef until cooked through. Add the taco seasoning and stir to combine.
Arrange the tortillas in the bottom of the dish. Cut them in half if necessary, so they don't overlap too much.
Spread a thin layer of refried beans over the tortillas, spread on the salsa, sprinkle with seasoned ground beef, corn, tomatoes, and shredded cheese.
Add another layer, to build 3 full layers. Don't place a final layer of tortillas on the top.
Cover with foil and bake it for about 40 minutes.
Remove from the oven. Divide into portions and top each portion with your desired toppings.