Add all ingredients to a large saucepan or pot over medium-high heat and stir to combine.
Once it begins bubbling, reduce heat to low and simmer. You’re looking for a frequent bubble, so if there isn’t much going on at the surface, increase heat to medium-low heat. If bubbling too vigorously, reduce heat to low.
Cook, uncovered, for 15-25 minutes, stirring occasionally. This is about a 20-minute pumpkin butter, but if you have more time, leaving it on the stove for another 5-10 minutes will only deepen the flavors and thicken the texture.
Taste and adjust seasonings as needed, adding more sugar or maple syrup for sweetness, pumpkin pie spice for warmth, or salt to balance the flavors. This recipe has a lot less sugar then most, so you might want your a little sweeter.
Let cool completely and store in the fridge or the freezer.