For the meringue:
1. Drain the pineapple slices and pat dry with paper towel. Paint the slices with melted butter on both sides. Broil the slices under the oven grill 4 minutes, turn and grill again until brown.
2. Beat the egg whites to stiff peaks and add sugar and almonds.
3. Sprinkle the fruit with rum.
4. Fill the centers of pineapple with strawberries and cover completely with the meringue. Grill until golden. Serve immediately.