Creating this incredible Tater Tot Casserole is straightforward. Follow these simple steps:

1. Preheat Oven: Begin by preheating your oven to 350°F (175°C).
2. Cook the Meat: In a large skillet over medium heat, cook the ground beef and diced onion until the meat is browned. Drain any excess grease.
3. Mix Ingredients: Stir in the cream of mushroom soup and mix well. Add the frozen mixed vegetables, seasoning with salt and pepper to taste.
4. Assemble the Casserole: In a greased 9×13 inch baking dish, spread the beef and vegetable mixture evenly across the bottom.
5. Add Cheese: Sprinkle the shredded cheddar cheese over the meat layer.
6. Top with Tater Tots: Arrange the frozen tater tots in a single layer on top of the cheese, covering the dish completely.
7. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes, or until the tater tots are golden brown and crispy.
8. Serve: Let the casserole cool for a few minutes before serving to prevent burns.

Following these steps will lead you to a perfect Tater Tot Casserole that will enchant your taste buds!