Preheat oven to 350°F. Grease baking molds with coconut oil. In a large bowl, whisk together flour, pumpkin pie spice, baking soda, baking powder, and salt. In a separate bowl, mix together pumpkin puree, honey, plain Greek yogurt, large eggs, and melted coconut oil. Pour wet ingredients into the flour mixture; stir to combine. Transfer batter to molds. Bake 15 to 20 minutes, depending on the size; check using a toothpick.