Start by browning the ground beef in a skillet over medium heat. Break it into small pieces and cook for about 7 minutes until the juices run clear. Drain excess fat for a lighter casserole.
Sprinkle taco seasoning over the cooked meat and add water. Let it simmer for 2 minutes so the flavors meld together nicely before transferring to the crock pot.
Add the diced potatoes, cheddar soup, 1 cup of shredded cheese, sour cream, and salsa to the slow cooker. Mix everything until fully combined for an even flavor in every bite.
Top with the remaining cheese and cover. Cook on high for 3-4 hours or on low for 4-6 hours, until the potatoes are tender and the cheese is melted to perfection.
Sprinkle with parsley or your favorite toppings before serving. This adds a pop of color and a fresh taste to the creamy casserole.