Grease an 8 or 9-inch baking pan. Spread pecans on bottom of the pan
Combine Sugar Cinnamon and Sugar in a plastic bag
Open canned biscuits and separate the dough, place 2 or 3 biscuits at a time and shake in the cinnamon sugar bag.
Place the sugared biscuits around the edge of the pan, slightly overlapping each other. Repeat with remaining biscuits, using the last 3-4 biscuits to fill the center of the pan
Place butter and brown sugar and vanilla in a microwave-safe bowl (or a 2 cup measuring cup) microwave for 60-90 seconds on high until butter is is melted. Remove, stir, return to microwave for 30 seconds. Stir again and pour evenly over biscuits
Place buns in preheated 375° oven with a baking tray under the pan to catch any drips
Bake 20-25 minutes or until center is done - remove from oven and let sit for 10 minutes
Place a plate or serving dish on top of the pan and flip rolls out on to plate -Enjoy!