Creating the delicious Tater Tot Casserole is straightforward when you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Meat: In a large skillet, brown the ground beef over medium heat. Add diced onion and bell peppers, cooking until they are soft. Drain any excess grease.
3. Mix the Base: In a large bowl, combine the cooked meat mixture with the cream of mushroom soup, sour cream, garlic powder, salt, and pepper. Stir until well combined.
4. Layer the Casserole: Spread the meat mixture evenly in the bottom of a greased 9×13-inch casserole dish. Sprinkle half of the shredded cheddar cheese on top.
5. Add Tater Tots: Arrange the frozen tater tots in a single layer over the cheese.
6. Top with Cheese: Sprinkle the remaining shredded cheddar cheese over the tater tots.
7. Bake: Place the casserole in the preheated oven and bake for 30 to 35 minutes, or until the tater tots are golden brown and the cheese is bubbling.
8. Cool: Remove from the oven and let the casserole cool for 10-15 minutes before serving. This allows the flavors to meld and makes it easier to serve.
9. Serve: Cut into squares and serve warm.

By following these simple steps, you can easily prepare a dish that is not only tasty but also reminds everyone of home-cooked delights.