Preheat oven to 350℉. Spray a 10 x 15-inch baking sheet with nonstick spray, so the parchment paper sticks. Line the sheet with parchment paper. Then, spray or the parchment paper, too.
Whisk the flour, baking powder, baking soda, Member's Mark™ Ground Cinnamon, Member's Mark™ Pumpkin Spice, and salt together in a large bowl. Set aside.
In a medium bowl, whisk the eggs, pumpkin, brown sugar, granulated sugar, and vanilla together until combined. Pour the wet ingredients into the dry ingredients and whisk until combined.
Spread batter evenly into prepared pan, making sure the batter is level and reaches the corners. Bake for 17–18 minutes, or until the cake springs back when you poke it with a finger.
Meanwhile, lay a clean, thin kitchen towel flat on the counter. Sprinkle with ¾ cup confectioners’ sugar. Once the cake comes out of the oven, immediately invert it onto the towel. Peel off the parchment paper. Starting with the narrow end, slowly and gently roll the cake up with the towel.
Allow the cake to cool completely while rolled up in the towel. You can place it in the refrigerator for about 2 hours to speed up the cooling time.
Remove the cake roll from the refrigerator and allow to sit on the counter for a few minutes to warm back up a bit as you prepare the frosting.