1Spray inside of Crockpot with non-stick cooking spray.
Combine uncooked pasta,cheeses, garlic,pepper and butter.
2Cut up bacon into microwave safe bowl..
3Cook bacon for 30 seconds, stir, cook for 20 seconds. drain on paper towel then add to Crockpot.
4Pour milk over all and stir to combine.Cover and cook on LOW for 2 hours, stirring every 20 minutes. After last stirring leave cover off and add cracker crumbs,if desired. Make sure pasta is tender and mixture is moist.