I grew up in central Europe and we traditionally ate open-faced sandwiches of artisan bread or bread rolls. You'd top it with some margarine or cream cheese, salami and cold-cuts, thin-sliced cucumbers or radishes, or serve fresh bell peppers on the side. In the US, Subway's deli sandwiches come close, albeit I've found them much heavier, in both the amount of bread, and the sheer quantity of meat.

I too wish that more fast food restaurants served lunch alongside breakfast, instead of exclusively breakfast in the mornings.