###1. Carry pre-generated characters.  
###2. Allow character changes after-the-fact.

 1. [**Pregenerated
    characters**](https://dnd.wizards.com/articles/features/character_sheets)
    can save you a lot of time. It's not the ideal solution for
    immersive role-playing, but it'll save you what sounds like hours.
    Then, between sessions, allow the new player to build a character of
    similar level, now that they've got a taste for what they like or
    don't. I've got a stack of about 30 pregens* that I keep in my GM
    binder, so a new player can usually find something pretty-close to
    their idea and get rolling.

  After the session the player can either keep the pregen, make modifications to it and keep playing it (see below), or make a new character from scratch now that they've some ideas. The pregen thus discarded could be worked into the narrative as an NPC or discarded as you see fit. (With thanks to @Cronax for the suggestion.)

 2. Many GMs **allow players to make modifications to characters well
    after character creation**. In Adventurers League it's everything
    down to race, class, and ability scores until level 4**.  Others
    will make reasonable allowances for changing anything that hasn't
    factored majorly into gameplay. [This question for helping new
    players make
    characters,](http://rpg.stackexchange.com/q/62679/23970) and its
    answers, contains good guidance in this vein. I, personally, will
    allow pretty-major rebuilds at any level; my 5e table isn't much
    prone to "abusing" mechanics.***

  The purpose of this is to take the weight off of the many decisions inherent in the character creation system. The player doesn't have to worry that a poor choice of skill may not synergize with the feat they'll take at level 8 or if they've the right spells in the book.

<hr>

<sup>*</sup> Some come from the WotC site, some from the defunct Wizards Forums. Others from "solitaire" play--rolling up characters for fun--and others were specifically built to provide character continuity from previous campaigns/systems.

<sup>**</sup> see page seven of the [Adventurer's League Player's Guide](http://media.wizards.com/2015/downloads/dnd/ALPGv3_print.pdf), "Character Rebuilding"

<sup>***</sup> In real life I play a character in a system where it's a *very* hard and long process to make these sorts of changes. I don't find it fun enforcing that constraint on game-players.