In a large skillet, brown sausage. Drain sausage in a colander.
Cut cream cheese block into small cubes. Place the cream cheese, ¾ cup Mozzarella cheese, tomatoes, dressing mix, chives, and sausage into a slow cooker.
Heat the mixture in the crock pot on high heat for approximately 1 hour, stirring occasionally until the dip is well mixed and the cream cheese has melted.
Transfer hot dip into a serving dish and sprinkle with the rest of the Mozzarella cheese and some more dry chives. Serve with your favorite tortilla chips.
Recipe by The 36th AVENUE at https://www.the36thavenue.com/slow-cooker-cheesy-sausage-dip/