Add a handful of ice into 2 tall glasses. Pour 1 cup of cold brew into each glass. Add 1 tbsp maple syrup to each glass (if using) and stir.
Make the pumpkin cold foam by adding heavy cream, pumpkin puree, maple syrup, pumpkin pie spice, and vanilla extract to a high-speed blender. Blend on high for 30-45 seconds until foamy.
Divide the pumpkin cold foam equally between each glass of cold brew, pouring it over the top. Serve!