First off, I tend to have the same take on this as Twist when cutting. I think of it as a blessing in disguise when I'm forced to skip a meal now and then.

Regardless, the brownies can be very helpful. I don't have a real recipe, I always eyeball it. Here's what I make for a low-carb movie snack sometimes:

2 tablespoons natural PB
1 egg
1 Scoop chocolate whey
1 Scoop vanilla casein
Water until it reaches a pancake batter consistency

Microwave for a minute or bake for better results.

I'm sure you could also do this:

Follow a conventional brownie recipe but use unsweetened baker's chocolate, chocolate whey, splenda, and finely ground oats and whole grain flour. It would be a pretty clean meal but also have some resemblance to a "normal" person's snack.