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I used to make pretzel joys. Grab some decent chocolate chips of your choice. Some Bachman butter pretzels and rice cripsies. Melt the chocolate and stir in some crushed up butter pretzels and rice crispies.
Use a tablespoon and drop them into cupcake papers. These are huge hits. You only have to use the microwave and they dry on their own.
I make them in 3 flavors dark chocolate, milk chocolate and white.
People love them the salt and sweet and crunchy huge hit.
I also made them with potato chips and pretzels and they were well received.

Oreo truffles? 1 package oreos (pulsed in food processor until crumbly), 1 8 oz. block cream cheese, softened -- food process together, make into little balls, then dip them in melted chocolate, drizzle w/ melted white and bittersweet chocolate, refrigerate overnight. They're usually a huge hit at my office ...

I know you said no fruits and veg, but what about chocolate covered strawberries? ridiculously easy and always a hit, you can melt the chocolate in the microwave.
rice krispie treats? You can make them in the microwave... I like to spread them in the pan and immediately shake some of those little round colored balls that you use to decorate cookies over top (not jimmies, the round things). They "dress up" the treats and everyone gets all excited.
What about a sweet cheese ball with mini chocolate chips? Requires no oven or even a microwave...
link

I would even be worried about cupcakes with frosting surviving a commute--although I assume your car is air-conditioned. Homemade ice-cream for make-your-own sundaes is one possibility, chocolate pudding with add-ins--or what about cookies for ice cream sandwiches, since they cook so quickly?

@jerzee: those sound so good, it's where I'm leaning right now.

@tusti: that's no fun!

@heartofglass: I actually commute via public transportation. While I haven't had problems with frosted cupcakes before, ice cream doesn't have a prayer.

When I suggested ice crea bars, I assumed they would be in transport under a heavy freeze, in a small cooler, in an air conditioned car, with a short commute too.

What's the commute situation? Maybe we can make better suggestions then.

Chocolate Trifle

All ingredients are store bought:

about 1 store bought cake or brownies, break into chunks.
2 packages of instant chocolate pudding, prepared according to directions.
2 tubes of cool whip or whipped cream. I prefer the cool whip here because it holds up better. But do the whipped cream if you have the time.
2-3 Health or Skor bars, coarsely crushed

Take 1 large bowl and layer cake/brownie on the bottom. Next, layer on pudding. Sprinkle half of crushed candy. Next layer: Whipped cream or topping. Top remaining candy. Refrigerate and until chilled, but once assembled it's pretty much ready to eat. This is a crowd pleaser for most of the parties that I bring it.

If you ever register at Macy's in Cherry Hill (NJ), you are bound to meet Cookie in Housewares. She is hilarious and outgoing and wears about a dozen chains around her neck and tells you about her grandson who published a book.

She also publishes her own recipes and staples them into a packet to hand out to brides. Recipes meant to be easy even for the most unculinary types.

Anyway, this recipe is from her book.
1 pkg chocolate ship
1/3 cup peanut butter
6 cups cornflakes.

melt chocolate chips, add peanut butter in a double boiler. Remove from heat. Add cornflakes and stir until all coated. Drop teaspoon amounts onto waxed paper and chill until set.

You could do this with peanuts and pretzels and rice krispies, kinda like @JerzeeTomato's recipe above!

OR:

--Rice Krispie treats cut in half, drizzle caramel in-between and squish them back together.

--Jello pudding in a pre-baked crust--I'm serious, this is yummy. We once made a pirate dessert writing RATE on the pie with chocolate chips. GET IT?

--What about Puppy Chow? Or Muddy Buddies or whatever you call that crack that consists of melted chocolate, peanut butter, butter tossed with chex and then shaken in a bag with powdered sugar. I need to make all these.

(P.S. I am in Fairmount and also dying, melting, etc.)

@jerzee---make that a third person making pretzel joys!! I love the salty sweet concept...
@inothernews-that sounds great too!

chocolate pudding pie. buy a pie crust--graham cracker is my preference. a box of instant chocolate pudding & milk plus some whip cream. it takes about 5 minutes to make and 5 minutes to settle. you can also throw fresh fruit on top or peanut butter chips.

This recipe is so Paula Deen or Sandra Lee, but we love it when we want dessert but it's too hot to bake. It really does taste like an eclair, but it's not as texturally comforting as the real thing.

Chocolate Eclair Cake

Graham crackers or Vanilla Wafers
Jello vanilla instant pudding, prepared according to package directions
Mrs. Richardson's (after homemade, it's my favorite) hot fudge topping

Cover the bottom of a square glass or ceramic baking dish with a layer of Graham crackers, cutting them if necessary to fit to the edges. Spread a layer of pudding over the crackers, about a half-inch worth. Top with another layer of graham crackers, more pudding, and repeat until you've used all the pudding. Top with a final layer of graham crackers. Warm the hot fudge sauce enough to make it spreadable. Ice the graham crackers with the hot fudge, using enough to cover it generously and making sure to go all the way to the edges so that it's sealed. Refrigerate overnight. Put the dessert in a shirt box, wrap the box in plastic, then wrap with a double layer of aluminum foil. It will get you to work without condensation forming and will stay cold for an hour.

I usually make this in a 13"x9" glass casserole, which takes about half a box of graham crackers and two small packages of pudding. The graham crackers will soften so that you can stick birthday candles in it and the "cake" is easy to cut into squares.

Termini's!!!!