Combine all ingredients in a mason jar and blend using an immersion blender or milk frother.
Store in an airtight container in the refrigerator for up to 3 days.
Notes
Substitute oat milk, soy milk, cashew milk, or coconut milk instead of almond milk. Optionally, you can use whole milk if you're not dairy-free.If you don't have pumpkin pie spice, you can make a batch of your own with these ingredients: 3 tbsp cinnamon, 2 tsp ground ginger, 2 tsp nutmeg, 1.5 tsp allspice, and 1.5 tsp cloves.If you don't have an immersion blender or milk frother, you can blend all ingredients in a high speed blender.