Prep time: 10 minutes
1/2 – 1 grapefruit (I recommend pink grapefruit)
8-10 hazelnuts or almonds
1/2 tbs brown sugar
Set oven temperature at 250°C (480°F). Cut the grapefruit in half crosswise. Loosen the grape meat from the membranes with a grape knife or grape spoon. Coarsely chop the nuts. Sprinkle nuts and brown sugar over the fruit halves. Bake in the oven for a few minutes until the surface begins to brown.
Having tried two different varieties of baked grapefruit last weekend (both with meringue), I recommend removing all the flesh from the fruit, removing and discarding the membranes, mixing the flesh with the nuts and sugar and putting it back in the halves. It may not look as good, but makes less of a mess when you eat it.