Preheat your oven to 200 degrees.
Pop your popcorn. I did mine on the stove old school style!
Place your popcorn in a large roasting pan.
Now in a large saucepan combine your butter, brown sugar, and corn syrup.
Over medium-high heat bring this mixture to a boil. Keep it at a boil for about 5 minutes.
Now remove it from the heat and stir in the chocolate, salt and vanilla.
Let it stand until the chocolate melts. Stir it occasionally.
Once it is melted stir until smooth.
Now pour this over your popcorn, toss it gently with a wooden spoon to coat it all evenly.
Place in the oven and bake for 30 minutes. Stir it occasionally.
Remove from oven and transfer popcorn to parchment paper to let it cool down.
Serve with a smile.