Add the ground beef, onion, and garlic to a large skillet set over medium heat. Cook, crumbling as you go, until completely browned through and the onions are tender.
1 1/2 - 2 lbs lean ground beef, 2 tbsp dried minced onions, 2 1/2 tsp minced garlic
Drain off any excess grease- then season the mixture with salt and pepper, stirring to combine. Transfer the ground beef to the bowl of your slow cooker.
1 tsp seasoned salt, 1/4 tsp ground black pepper
To the bowl of the slow cooker add the hashbrowns, 2 cups of shredded cheddar, tomatoes, soup, sour cream, and taco seasoning. Carefully stir until the mixture's evenly combined- the bowl will be FULL.
2 20 oz bags refrigerated shredded hashbrowns, 3 cups shredded cheddar cheese, 1 10 oz can mild diced tomatoes with green chiles, 1 10.5 oz can condensed cheddar cheese soup, 3/4 cup sour cream, 1 1 oz pkt taco seasoning
Spread the mixture out, then top with the remaining shredded cheese.
Cover and cook on HIGH for 2 1/2 - 3 hours.
Serve warm, with toppings of your choice, and enjoy!