Add the diced pears, pumpkin pie spice, cinnamon, granulated sugar, brown sugar, and salt to a saucepan over medium heat. Stir and bring the mixture to a boil.
Reduce the heat to low, cover, and simmer for 10 minutes.
Remove the lid and use a fork, potato masher, or the back of a spatula to crush the pears as much as you'd like. I like leaving some small pieces for texture.
Continue cooking uncovered for another 5–10 minutes, stirring occasionally, until the mixture has reduced and thickened slightly.
If the jam is thicker than you'd like, add 1 tablespoon of water at a time, up to 2 tablespoons total. Simmer for another minute after adding the water.
Remove from the heat and allow the jam to cool. Transfer to a clean glass jar or airtight container and refrigerate.
Enjoy on toast, biscuits, pancakes, oatmeal, yogurt, a cheese board, baked Brie, or alongside savory dishes like roasted pork.