Combine all ingredients in a blender and blend until smooth and creamy.
Pour your pumpkin spice latte coffee creamer into a mason jar or airtight container for storage, as you won't need it all for one latte.
Add 1-2 spoonfuls of your PSL creamer to hot brewed coffee and whisk together until a light froth forms at the top. You can also use a frother for extra decadent foam.
Store in an airtight container in the refrigerator — it will keep for 1-2 weeks. For best results, shake well before using.