Step 1

Pop the popcorn in the microwave according to the package instructions.

Step 2

Pour the butter, brown sugar, syrup, and salt into a microwave-safe jug.

Step 3

Microwave on HIGH for 2 minutes

Step 4

Give the jug's contents a stir. Microwave it again for 90 seconds. Stir again.

Step 5

Pour in the baking soda and vanilla essence. Mix together. It should become bubbly and lighter in color.

Step 6

Pour the caramel sauce over the popcorn. Stir thoroughly to completely coat the popcorn.