Brown paper bags aren’t technically microwave safe (the U.S. Department of Agriculture’s Food Safety and Inspection Service advises against putting brown paper bags in the microwave), but the paper bag method is a tried-and-true way to make homemade popcorn.
Keeping this in view, can you microwave bagged popcorn?
Place the cold popcorn into a microwave-safe dish. Cover the dish lightly with plastic wrap. Microwave the popcorn for 20 seconds on high. This should be enough to reheat it and make it enjoyable again.
Consequently, can you pop popcorn in a glass bowl? For microwave popcorn in a glass bowl:
Add the popcorn kernels to a large microwave-safe glass bowl with a tight fitting lid. (Such as a large Pyrex bowl.) Cover the bowl, place in the microwave and microwave on high for 5-6 minutes. Listen carefully and stop the popcorn when you hear 2 seconds between pops at the end.