Step 1

Preheat your oven to 375°F (190°C).

Step 2

Lightly grease a 9x13-inch baking dish with cooking spray. Set aside.

Step 3

In a large skillet over medium-high heat, add the ground beef and chopped onion, breaking apart the beef and stirring regularly. Cook for 7 to 8 minutes, or until the beef is browned and the onion is soft and translucent. Drain excess fat.

Step 4

Stir in the Worcestershire sauce, salt, pepper, and garlic powder. Remove from heat and set aside.

Step 5

In a large bowl, mix together the beef and onion mixture with sour cream, condensed cream of mushroom soup, corn, and 1 cup of shredded cheese. Spread this mixture evenly in the prepared baking dish.

Step 6

Arrange the frozen tater tots in a single layer on top of the mixture. Sprinkle the remaining 1 cup of shredded cheddar cheese over the tater tots.

Step 7

Bake for for 35-40 minutes, or until the tater tots are golden brown and the casserole is bubbly.

Step 8

Serve and enjoy!