Preheat oven to 400 degrees F.

Spray mini muffin tins with cooking spray.

Cook pasta according to package directions and set aside.

In a medium-size pan combine butter and flour over medium heat. Whisk until butter is melted and the mixture is smooth. Slowly add milk and bring to a simmer. Add 1½ cups of the cheese, cream cheese, salt, and pepper. Stir until smooth and creamy. Remove from heat.

In a large mixing bowl, carefully stir pasta, cheese sauce, and egg until evenly mixed and pasta is evenly coated.

Spoon mac and cheese into mini muffin tins and top each with a small pinch of remaining cheese. Bake at 400 degrees F for 15 minutes or until golden brown.

Allow to cool 5 minutes before gently removing the bites.