Preheat oven to 350 degrees Fahrenheit. Line a cookie sheet with parchment paper.
Add cake mix, pumpkin pie spice, and light brown sugar to a large mixing bowl. Whisk to combine ingredients.
Add white chocolate chips and chopped pecans to the bowl. Toss to coat with cake mix.
Next add pumpkin purée, Greek yogurt, olive oil, vanilla, and eggs to the bowl. Stir to combine ingredients.
Scoop pumpkin cookie batter onto the cookie sheet, spacing cookies 2 inches apart. Each scoop should contain about 1-½ to 2 tablespoons of cookie dough.
Bake the cookies for 9 to 11 minutes, or until a toothpick inserted into the center of the cookies comes out clean.
Place the pumpkin cooked cookies on a cookie rack to cool. Serve with coffee, tea, hot cocoa, or milk for a delicious snack or dessert.