Add the milk and heavy cream to a good quality blender.
Also add pumpkin puree, instant coffee, brown sugar, vanilla extract, pumpkin spice and cinnamon powder to the blender and blend until very smooth and the drink looks frothy on top.
Stove top instructions
Pour the prepared pumpkin drink to a saucepan, heat the mixture while you stir it, so the mixture won't burn at the bottom of the pan.
Once the mixture is almost about to boil, turn off the heat and you may slightly cool down the mixture for about a minute or so, if needed (do not place in the hot stove or the milk can boil over).
Transfer the pumpkin spice latte to a serving coffee mug (while it's still hot), sprinkle with little more cinnamon powder & pumpkin spice powder as you like and serve immediately for best results!
Microwave instructions (easy method)
Pour the pumpkin drink from the blender to a large sized microwave safe coffee mug. Make sure to use a large sized mug so you fill the mug only about half a mug or little more.
It is important not to use a small sized mug becasue if you fill the mug until the brim or almost full, the milk may boil over and cause a mess inside the microwave while you prepare the drink.
It is best to use a large sized coffee mug and fill only about half of the mug or little more, so it won't boil over.
Place the coffee mug inside the microwave and microwave for about one minute and 30 seconds.
Once it is done, gently stir the content once so the heat will be evenly distributed, sprinkle with extra cinnamon powder and pumpkin spice powder as you desire and serve immediately!
Notes
You may also top the pumpkin spice latte with whipped cream if you wish, so the drink will be even more rich!