In your mixing bowl, combine the yeast and warm water. Let it stand about 5 minutes, then mix a minute or two.
Add in the cake mix, salt and vanilla and mix until smooth.
Slowly add in the flour until it's a nice dough texture that's hardly sticky.
Put the dough ball onto a clean surface (cutting board works perfect) sprinkled with flour.
Cover with plastic wrap (spray with cooking spray first to prevent sticking) and let rise an hour.
Punch it down, then let rise another hour.
Roll out your dough until it's about ½" thick, then spread the melted butter over top.
Sprinkle the brown sugar and cinnamon mixture evenly, then cut into strips about 1" thick.
Roll each up, then place into a sprayed baking dish.
Either bake right away, or cover and store overnight in the fridge.
TO BAKE: Preheat oven to 350 Degrees F.
Uncover and bake for 15-25 minutes, or until insides of rolls are flaky and edges are starting to brown.
Mix the drizzle ingredients and spread over your rolls. ENJOY!