In a food processor or high-speed blender, combine the strained pumpkin puree, 1 cup cottage cheese, 1/4 cup maple syrup, 1/3 cup vanilla protein powder, 1 teaspoon vanilla extract, 1/2 teaspoon cinnamon, 1/2 teaspoon pumpkin pie spice, and 1/4 teaspoon salt. Blend until silky smooth.