To bake, preheat the oven to 400 degrees F. In a large bowl, mix the cream cheese, sour cream, shredded cheese, seasoning mix and jalapenos. Pour into an 8-inch square dish and bake until bubbly, about 20 minutes.
To slow cook: Turn a 6-quart slow cooker to high and add the cream cheese, sour cream, shredded cheese, seasoning mix and jalapenos. Stir, cover and cook until everything melts, 2 to 3 hours. Stir again.
For the topping: When ready to serve, top with the shredded cheese and fried jalapenos.