In a small mixing bowl, mash the strawberries with a fork, allowing some of the juices to seep out. Sprinkle the sugar over the top and let sit for 10 minutes, stirring once or twice.
While the strawberries rest, grill the doughnuts. Place the sliced doughnuts, inside part down over the flame on the grill for 2-3 minutes.
Remove from the grill and serve immediately with the strawberry "sauce," and whipped cream or ice cream.