1. Plan ahead! Smaller items can thaw overnight in the refrigerator, however foods weighing 1 kilo or more will  take about 24 hours in the fridge to thaw.
2. It is best to thaw the freezer bags on a plate or a pan so that moisture does not drip.
3. Food may be transferred from a freezer bag to a microwave safe container for thawing in the microwave.
4. Food thawed in the microwave tends to quickly reach temperatures that boost bacterial growth, so plan to cook or reheat it right away.

Also check- How do I manage excess cooked food? Freeze or not? and Facts to know with freezing and thawing