Dip each ladyfinger into the coffee mixture, one at a time, and lay them side by side in a 9x13 casserole dish.
Dip and lay the second layer of ladyfingers, then spread the remaining mascarpone filling on top.
*You can substitute rum, Kahlua, marsala wine, amaretto, brandy, for Baileys, if you prefer.
*Additionally, you can use a combination of alcohols, such as part rum and part coffee flavored liqueur, etc.
*You can use rum extract as well. Instead of vanilla extract in the whipped cream, you can use rum extract.
*If you want to make this non-alcoholic, simply omit the Baileys altogether. When making the egg mixture over the double broiler, you do not need to replace the Baileys with anything else if you want to keep this alcohol free.