With a sharp knife remove the top inch of each onion. Cut a small depression into the center of each onion (should be about the size of a walnut), keeping the outside layers intact. Reserve the removed onion for the bread dressing recipe.
In a small pan, melt the butter over medium heat, add the honey and reduce the heat to low. Add the cream and stir to combine well.
Place onions in a small buttered casserole. Spoon the cream mixture over each onion and top with grated nutmeg.
Bake at 350F for 45 - 60 minutes, until onions are soft and golden brown.