Preheat Oven: Preheat your oven to 375°F (190°C).

Cook the Meat: In a large skillet over medium heat, cook the ground meat, breaking it apart with a spatula, until no longer pink. Add the chopped onion and minced garlic, and continue to cook until the onion becomes translucent.

Add Soup and Sour Cream: Reduce the heat to low, and stir in the cream of mushroom soup and sour cream (or Greek yogurt). Mix until well combined.

Add Vegetables: Stir in the frozen mixed vegetables and season with salt, pepper, and any optional seasonings you like. Cook until everything is heated through.

Assemble the Casserole: Pour the beef and vegetable mixture into a 9×13-inch baking dish. Sprinkle with half of the shredded cheddar cheese. Arrange the frozen tater tots on top in a single layer. Sprinkle the remaining cheese over the tater tots.

Bake: Place the casserole in the preheated oven and bake for 25-30 minutes, or until the tater tots are golden brown and the cheese is melted and bubbly.

Serve: Remove from the oven and allow to cool for a few minutes before serving. Enjoy!