In a skillet, cook the ground venison over medium heat until browned. Add the chopped onion and minced garlic, and cook until the onion is translucent.
Stir in the cream of mushroom soup and season with salt and pepper to taste. Cook for a few more minutes until everything is well combined.
Transfer the venison mixture to a baking dish. Sprinkle the shredded cheddar cheese evenly over the top.
Arrange the frozen tater tots in a single layer over the cheese.
Bake in the preheated oven for 45 minutes, or until the tater tots are golden brown and crispy.
Let the casserole cool for a few minutes before serving. Enjoy!
Notes:
This casserole is perfect for a cozy family dinner. You can substitute ground beef if you don't have venison.