The best protein bar that you can buy is the Premier 8 bar. It has 32g protein, 8g carbs, and you can find them for less than a buck at a lot of places. The Lemon flavor is my favorite one, they're grrrrrrrrrrrrrreat. If you're just going for taste and not worried about price, then I think designer protein's lemon bars are pretty good. You could make your on for a lot less. Here's my recipe:
1 box of reduced calorie brownie mix
All the ingredients that the box calls for x2
300g of protein powder
While these may not be perfect, they're pretty hard to beat for the price. I also like to make protein pudding using fat free, sugar free jello pudding, it's really good.