Preheat oven to 425° F. and lightly coat an 8-inch baking dish with cooking oil spray Stir the cream cheese, sour cream, lemon juice, salt and pepper together in a large bowl.
Gently fold in the pimientos, Cheddar cheese and Jack cheese.
Once combined, transfer the cheese mixture into the prepared baking dish.
Bake until bubbling and the top is a light golden brown, approximately 15 minutes.
Serve with your choice of crackers, chips or vegetables and enjoy! (Note - Great the next day too if there happens to be any leftover. It's tasty cold and some people prefer it that way, but you can always heat it up in the microwave if you like it that way better.)