As a fun way of browning the meringue, you can pour brandy or rum over the Baked Alaska and (carefully!) ignite just before serving!
When greasing your bowl, be sure to use flavorless oil such as: vegetable [canola, safflower] oil, cooking spray, walnut/grapeseed/coconut oil -- just be sure not to use olive/sesame/peanut or any flavored or infused oil!
If the ice cream will not release from the bowl, use a small culinary blow torch to warm the bottom of the bowl (while placed upside down over the cake + plate!) OR invert the frozen bowl over a second plate or cutting board, larger than the bowl, and briefly run the bottom of the bowl under warm water. To transfer to serving plate, replace bowl upside right (natural bottom down) on the counter, remove cutting board or plate and *carefully* invert serving plate and cake round over the bowl -- the easiest way to do this is by place your cake round over the bowl and then inverting your serving plate over the cake and flipping the whole thing over.