What are some good, quick, easy sources of good carbs?

I need about 60g per meal for 5 meals a day .. to get 300g. Its a problem sometimes as I'll generally always be about 20-25g short per meal.

Wholegrain bread - how much?

What are some other easy sources I can add to my meal to get the required carbs???

Thanks..

Traditional oatmeal takes 2 mins to make in the microwave.
Sweet potatoes take 5-6 mins in the microwave.

Both are excellent sources and taste awesome.