01 -
Preheat oven to 375°F and grease a 9×13-inch baking dish with non-stick spray.
02 -
Cook ground beef and chopped onions in a skillet over medium heat until beef is browned and onions are soft.
03 -
Stir in minced garlic and taco seasoning. Cook for 1 minute until fragrant, then remove from heat.
04 -
In a large bowl, mix hashbrowns, cheese soup, 1 1/2 cups of cheese, and the cooked beef mixture.
05 -
Spread the mixture evenly in the prepared dish and top with the remaining 1/2 cup of cheese.
06 -
Bake uncovered for 25–30 minutes until the top is melted and golden brown.
07 -
Let the casserole rest for 5 minutes before garnishing with desired toppings and serving.