1 cup of brown sugar 
1/3 cups of heavy whipping cream 
1/4 cup of salted butter 
1 teaspoon of vanilla 
1 cup of powdered sugar 
1 1/2 cups of pecans
Line a cookie sheet or two with parchment paper 
Place the brown sugar, vanilla, butter and heavy whipping cream in a sauce pan; place over medium heat, bringing it to a boil, stirring constantly 
Let boil for one minute, then remove from heat and immediately whisk in powdered sugar,  Once powdered sugar is all mixed in, add pecans 
Using a tablespoon or soup spoon, place large dollops of the mixture on your lined cookie sheet 
Allow to sit for 30 minutes; for faster setting, place in a refrigerator