Preheat the oven to 350F. Brown the ground beef in a large skillet over medium-high heat until no pink is left.
Add the enchilada sauce and salsa, and mix well. Set aside
Spray the bottom of a 9 x 13-inch casserole dish with cooking spray and layer two tortillas on the bottom
Spoon ⅓ of the meat mixture over the tortillas
Sprinkle 1 cup of corn evenly over the meat sauce.
Top with ⅓ of the shredded Cheddar cheese.
Repeat the layers ending with tortillas, meat sauce, and cheese, and bake for 30 minutes or until the cheese is melted and bubbly.