Baking it in the oven helps crisp the top, but if it needs more browning, you might like to use a kitchen blowtorch to finish it off. Broiling it briefly is another option, but if you choose to do this, be very careful! The meringue layer can turn from white to burnt in the blink of an eye! Torching it is safer since you can see exactly when it’s crisped enough. Don’t use a regular lighter since that gives the meringue a weird smell and doesn’t crisp the meringue sufficiently.