Microwave Caramel Popcorn

1/2 C butter
1/2 tsp salt
1 C brown sugar
1/4 C light corn syrup
1/2 tsp baking soda
1 tsp vanilla
You need about 16 C popped popcorn. I used 2 bags of microwave popcorn - which is a little less I think.

Put the popped popcorn into a paper grocery bag.

Place butter, tsp salt, brown sugar & corn syrup into a microwave-safe bowl. Cook on high 1-2 minutes until caramel mixture bubbles. Stir, then cook 3 minutes more - stirring after each minute.

Add baking soda & vanilla and stir. Pour mixture all over popcorn in paper bag. Fold the bag down several times (so it fits back in microwave) & cook on high 1 minute. Shake the bag.
Cook 1 minute more, then shake.
Cook 30 seconds, then shake.
Cook 30 seconds more & shake again.
Then pour out on the counter to cool (on foil or waxed paper).