In a large skillet, heat over medium-high heat. Add 1 pound of ground beef, breaking it apart with a spatula, and cook until it's browned and crumbled, about 6-8 minutes.

Return the drained beef to the skillet and stir in garlic powder, onion powder, salt, and black pepper. Mix thoroughly to coat the beef evenly in the seasonings, and sauté for an additional minute.

In a medium bowl, combine sour cream and chopped green onions. Add in half of the shredded cheddar cheese and mix until well combined.

Preheat your oven to 375°F (190°C). In a 9x13-inch baking dish, layer the seasoned beef mixture at the bottom and smooth the creamy mixture over the beef layer.

Spread the frozen potato tots in a single layer over the creamy layer, then sprinkle the remaining shredded cheddar cheese on top.

Carefully place the casserole in the preheated oven. Bake for 30-35 minutes, or until the tots are golden and crispy and the cheese is bubbling.

Once out of the oven, let your casserole sit for about 5 minutes to allow it to set slightly before serving.