Preheat oven to 350 degrees. In a bowl add butter, brown sugar, vanilla and cinnamon. Place in microwave and heat for 30 seconds, stir and heat for another 30 seconds until all butter is melted. Add in apples and pecans to the bowl. Mix everything together until apples and pecans are coated. Pour mixture into the bottom of a pie pan and place frozen mini croissants right on top

Bake in oven for 35 - 40 minutes or until croissants are golden brown and completely cooked. Take a serving platter and secure it on top of the pie plate so you can flip over the pie plate to release the croissants and have the apple / pecan mixture on top and ready to serve on the platter. Serve right away