Crock Pot Mac and Cheese - Southern Comfort Food

1 16 ounce box elbow macaroni 

4 cups whole milk 

8 ounces yellow cheddar cheese, shredded

8 ounces white cheddar cheese, shredded

4 ounces cream cheese, at room temperature 

8 ounces sour cream

1 ½ teaspoons white pepper 

1 teaspoon ground mustard

Fill large pot halfway with water and bring to boil. Pour in a dash of olive oil and macaroni. Cook for 2-3 minutes and drain. Add macaroni to the slow cooker with milk, cheeses and seasonings. Cook on low for 1 hour, stirring occasionally. Cut the cream cheese into cubes and add to slow cooker with sour cream. Stir until cream cheese has melted. Cook on low an additional 20-30 minutes until hot and creamy. Serve as is or with bacon bits.