Place cream cheese, shredded cheeses, diced pimentos, mayonnaise and red onion in a medium bowl. Using a hand mixer, blend ingredients together, about 1 minute. Season pimento dip with garlic powder, salt and pepper.
Serve pimento dip with tortilla chips or sliced French bread.
Recipe by sweet caroline's cooking at https://sweetcarolinescooking.com/2016/11/02/true-life-pimento-cheese-dip/