Prep the Pan: Heat your oven to 350°F (175°C). Line a 12-cup muffin tin with paper liners or use a silicone pan. Lightly grease the liners to prevent sticking.
Mix Wet Ingredients: In a large bowl, whisk pumpkin, eggs, almond butter, melted coconut oil, vanilla, and sweetener until smooth.
Add the Dry: Sprinkle in pumpkin pie spice, cinnamon, baking powder, baking soda, and salt.
Stir until just combined. The batter will be thick but scoopable.
Fold in Extras: If using chocolate chips or nuts, gently fold them in now.
Fill the Cups: Divide batter evenly among the 12 muffin cups, filling each about 3/4 full. Smooth the tops with the back of a spoon if needed.
Bake: Bake for 18–22 minutes, or until the tops are set and a toothpick comes out mostly clean with a few moist crumbs.
Cool: Let muffins cool in the pan for 5 minutes, then transfer to a wire rack.
They firm up as they cool.
Taste and Adjust: Try one once it’s warm, not hot. If you prefer sweeter, note it for next time and add 1–2 tablespoons more sweetener.