Prep your pan and oven: Heat the oven to 350°F (175°C). Line a standard 12-cup muffin tin with liners or lightly grease with oil spray.
Whisk the wet ingredients: In a large bowl, whisk pumpkin, eggs, maple syrup, brown sugar, yogurt, oil, and vanilla until smooth and glossy.
Mix the dry ingredients: In a separate bowl, whisk flour, oat flour, protein powder, baking powder, baking soda, pumpkin pie spice, and salt.
Combine gently: Add the dry mixture to the wet mixture. Stir with a spatula until just combined.
The batter should be thick but scoopable. If it’s too thick, add 1–2 tablespoons milk.
Fold in add-ins: If using chocolate chips or nuts, gently fold them in now. Don’t overmix.
Fill the muffin cups: Divide the batter evenly among the 12 cups, about 3/4 full.
Sprinkle pumpkin seeds on top if you like a little crunch.
Bake: Bake for 16–20 minutes, or until a toothpick inserted in the center comes out clean or with a few moist crumbs. Start checking at 16 minutes.
Cool: Let muffins rest in the pan for 5 minutes, then transfer to a wire rack to finish cooling. This helps them set and stay fluffy.
Enjoy: Serve warm or at room temp.
They’re great plain, with a smear of almond butter, or a touch of cream cheese.