@Yorky
In south Louisiana your vegetable is called Merliton.  It is 
not a root vegetable. It grows on a vine.  It has a very high water content and a very mild flavor.  It does absorb the flavor of anything it is cooked with.  We make shrimp or crawfish casseroles with Merliton.  It also makes a good quick pickle - serve with a salad.  Good for a casserole with any flavorful protein.
Dad liked it boiled,  salt and pepper and a drizzle of vinegar.
Experiment - think of it as a filler.  It can also be stuffed with a savory mixture.