In a large bowl, mix together the evaporated milk, milk, eggs and garlic salt until fully combined. In a separate bowl, mix together the cheeses. Preheat the oven to 375°F. Lightly spray a 9×13 inch baking pan.
Layer 1/3 of the macaroni, then 1/3 of the cheese. Repeat with the remaining macaroni and cheese mixture. Pour the milk mixture over top. Sprinkle the paprika evenly on top. Bake in the preheated oven for 25-30 minutes.
