Turn a gas grill to medium heat, lower the cover, and preheat for 5-10 minutes, until hot.
Slice the doughnuts in half, and spread the cut side of each doughnut with a thin layer of butter.
Grill the doughnuts, cut side down first, for about 60 seconds per side. Watch closely since the sugar can go from nicely caramelized to burnt in no time.
Once toasted on both sides, remove the doughnuts from the grill and let them cool until they’re warm but not hot. Top the warm doughnuts with a scoop of ice cream, fresh berries, and any other toppings you’d like. Serve immediately.