Preheat the oven to 375 degrees F (190 degrees C). Spray a casserole dish with butter-flavored cooking spray.

Fill a large pot with lightly salted water and bring to a rapid boil. Cook egg noodles at a boil until tender yet firm to the bite, 7 to 9 minutes. Drain well.

Meanwhile, cook ground beef in a large skillet with seasoning salt, black pepper, and garlic powder until browned and crumbly, about 5 minutes. Add corn, diced tomatoes with green chiles, and drained noodles; toss until coated with beef mixture.

Transfer noodle mixture into prepared casserole dish. Arrange cheese slices on top and cover with aluminum foil.

Bake in the preheated oven until heated through and cheese is melted, 20 to 30 minutes. Stir before serving.