Cook for 1 1/2-2 minutes, until bottom side is browned. Then turn cheese slices and cook for another 1 minute until browned. (Depending on the the heat of your burners the cheese may take more or less time to cook. The goal is for the cheese to be browned on both sides.)
While cheese is cooking, toast the bread.
Spread marmalade onto the toast.
Cut bread slices in half.
Place a piece of warm Halloumi on each piece of toast.
Garnish with sliced grapefruit if desired. Serve immediately.
Notes
If possible, eat the Halloumi Toast while nice and hot.If you can’t find Halloumi at your market, substitute a grilling cheese.Trader Joe's gluten free Norwegian Crackers are a good substitute for gluten free bread.If you're not gluten free use whatever is your favorite crusty bread or cracker.I keep bread in the freezer and defrost a few pieces as needed. This keeps the bread as fresh as possible.