Add all ingredients to a small saucepan over medium-high heat. Cook, stirring occasionally, until the mixture begins to boil. Reduce heat to medium-low and simmer for 10 minutes. Remove from heat and let sit for another 10 minutes.
Place a fine-mesh sieve over a bowl or large jar and strain syrup. Discard solids. Pour into an airtight storage container and transfer to refrigerator. Contents may settle, so just give it a quick shake before enjoying pumpkin spice deliciousness in your morning coffee or latte. I like 2-3 tablespoons of syrup stirred in to each cup, but you may prefer more or less. Make it your own!