Preheat oven to 300 degrees F. In a bowl, combine fat free cream cheese and drained pimentos. Press into bottom a 9 inch glass baking dish.
In a separate bowl, mix rinsed black beans and drained Rotel; spread over cream cheese mixture. Cover with shredded cheese. Sprinkle on the Mrs Dash Southwest Chipotle seasoning. Bake for about 30 minutes or until cheese is melted and golden around the edges. Serve hot with tortilla chips.