Updated (Sept 28, 2015) - The latest game patch (version 18.104.22.1680) has introduced a change to the objects altered by this mod. The "No Script" version of the mod has been updated to include this change but should still be compatible with older versions of the game.
The version of the mod which uses the script to modify the game objects does not require updating.
I found the default choices made by sims for meal size when cooking to be annoying. The default is to cook a single plate of a meal unless there are other hungry sims in the household, which ignores the fact that meals don't spoil right away particularly if they are popped into the fridge and fails to predict that other sims may soon be hungry even if they aren't now. This mod alters the autonomous meal cooking behaviour in the game. The following changes are made:
If there are one or two sims in the household, a random choice is made to cook either a single plate or a medium (4 plate) meal.
If there are three or more sims in the household, either a medium (4 plate) or large (8 plate) meal will be prepared.
Enables more of the gourmet meals to be prepared autonomously (using the same rules as above).
Sims will never prepare just a snack for a meal unless they live alone.
As a safety feature in case no older sims are present, children can always prepare a snack but will choose to eat an existing proper meal if one is available.
Compatibility and Installation Instructions
There are two version of the mod. The normal version uses a script to add the new interactions for the fridge objects. As some simmers prefer to avoid scripts, a scriptless (package only) version is also available, however this is more likely to conflict with existing or future mods.
For either version, just unzip the file you download into your mods folder. Inside the zip you should find either a package and ts4script file (normal version) or just a package (scriptless version) in your mods folder.
If you do use the scripted version of the mod, you must make sure that script mods are enabled in your game options.
The mod was written and tested on the latest game patch level (August 6 - 22.214.171.1240), but should work on any recent version of the game.
This mod may cause conflicts with other mods which change the meal preparation autonomy. The scriptless version will conflict with any mods that alter the fridge objects.