We have had no problems at all with the countertop space in the 23 FB and we too like to cook. If you need extra counter space the trailer comes with two white plastic cutting board sink covers which store under the sink; you can use one of those and still have 1/2 the sink uncovered to run water. Also, when preparing a meal we sometimes use the dinette table for extra counter space then clean it off just before eating.
One other handy trick we have discovered is for dishwashing. We have a metal folding drain rack and a rubber tray that goes underneath. It fits perfectly in the oven for storage when we are not using it and when it comes time to wash dishes, we place it on top of the stove with the cover closed.
Bottom line is we really have had no issues at all with the kitchen setup in the 23 FB and find it completely usable.
I hope this helps.