Brown the sausage in a skillet over medium heat. Drain off any excess grease completely.
Transfer the cooked sausage to a small slow cooker.
Add the cream of mushroom soup and the can of diced tomatoes and green chilies (do not drain).
Add the cubed processed cheese to the slow cooker.
Stir the ingredients together gently.
Cook on LOW for 2 to 3 hours, stirring every 30 minutes until the cheese is fully melted and the dip is smooth.
If the dip seems too thick, stir in the milk until you reach your desired consistency.
Serve warm directly from the slow cooker with tortilla chips or crackers.
Notes
For a richer flavor, use spicy bulk sausage instead of regular pork sausage.
If you prefer using real cheese, substitute the processed cheese block with 12 ounces of shredded sharp cheddar and 4 ounces of Monterey Jack cheese, adding 1 tablespoon of cornstarch to the shredded cheese before mixing to help prevent separation.
This dip is an excellent tailgate appetizer and can be kept warm on the ‘Keep Warm’ setting for serving.