I second the pillsbury frosting.
You know, two year olds do well with other treats rather than cake....
Last night, my 11 year old and I made chocolate dipped marshmallows.
This is something even your two year old can help you do.
Take marshmallows, dip halfway in melted chocolate.
Place chocolate side UP on wax paper.
Sprinkle coconut on to melted chocolate.
Sprinkle colorful Sprinkles on top of coconut and melted chocolate.
Spear with fun character, or just fun colorful toothpicks. .....
For a birthday, the birthday kid's marshmallows can be speared with candles to mark the age of the birthday kid.
For all the Christmas...excuse me, HOLIDAY parties our school is having this week, we're making these fun, festive colored marshmallows. Last night we used red and green sugar sprinkles on top of the white coconut and it looked great! We saw all sorts of cool sprinkles that would make this a great treat for any occasion. ... Flowers, Scooby Doo, SpongeBob, etc. When we placed all of the marshmallows on a tray, they looked gorgeous and like a giant, colorful cake. I like the non-tradional approach

...Ok.. and the NON-BAKING approach!