Preheat oven to 350 degrees. Lightly spray a 9×13-inch pan with cooking spray. Set aside.
Cook ground beef in a large skillet until no longer pink. Drain fat.
In a large bowl, combine cooked beef, bacon bits, cheddar cheese, tater tots, cheese soup and sour cream. Mix until throughly combined.
Spread mixture into prepared pan.
Bake for 45 to 50 minutes, until bubbly.