Cook orzo according to directions and drain. Put into a baking dish 8 X 12. Season it with a bit of the salt and pepper, sprinkle it with the parmesean cheese and 2 t. of the butter.
In a non stick frying pan with 1 T. butter sautee the spinach until nicely wilted. Season with a bit of the salt and pepper. Layer this on top of the orzo.
Lightly sautee in 2 t. of olive oil the flounder fillets (they don't have to be completely cooked at this point). Place them on top of the orzo/spinach. Top fillets with the drained crab meat. Sautee the crushed crackers in 1 T. butter for a moment, then top the crab meat with the crumb mixture and top with parsley.