Watermelon Burgers

4 pre-made hamburger patties (purchased or made at home)
4 slices white cheddar cheese
4 slices watermelon, the same size as the burgers, seeded (the mini watermelons are great) rind removed
1 tablespoon ground pepper
4 toasted buns

Grill the hamburgers almost to desired doneness, but 30 seconds before they are done, place a cheese slice atop each burger. Place the watermelon slices on the grill and dust with the pepper to taste.

Assemble the burgers on the buns with a slice of warmed watermelon on each on top of the cheese.