Preheat oven to 350 degrees. Place a sheet of parchment paper on a cookie sheet and spread a layer of pecans onto parchment paper. Place pecans into oven for 7 minutes. After 7 minutes, toss the pecans and place them back in oven for 4 - 5 minute intervals. Watch carefully so they do not burn. Take out of oven when they are roasted to your liking, usually it takes 15-20 minutes in total. Enjoy!