Preheat oven to 400°F.
Brown the sausage, adding the onion and mixing until done.
While cooking the sausage, microwave the bag of tater tots for about 5 minutes or until soft.
Spray an 8x11-inch baking dish lightly with cooking spray.
Spread 1/4 of the tater tots evenly on the bottom of the pan.
Add 1/4 of the sausage on top of the tots, spreading it evenly without mixing too much.
Add 1/4 of the corn on top of the sausage.
Sprinkle 1/2 of the cheese evenly over the corn.
Pour 1/2 of the sauce over the cheese.
Add the remaining tater tots in a layer on top of the sauce.
Add the remaining sausage on top of the tots.
Spread the remaining corn over the sausage.
Pour the remaining sauce over the corn.
Finish by topping with the remaining cheese.
Bake for 20 minutes.
Enjoy!