01 - Preheat oven to 350°F. Generously grease a 12-cup muffin tin or line with silicone inserts.
02 - In a medium mixing bowl, combine oats, chopped nuts, maple syrup, melted coconut oil, cinnamon, and salt. Stir until oats are evenly coated.
03 - Divide granola mixture evenly among muffin cups, pressing firmly into bottoms and up the sides to create a cup shape.
04 - Bake granola cups for 10 minutes. Remove from oven and press centers again gently to reinforce cup shape.
05 - In a separate bowl, whisk together pumpkin puree, egg, brown sugar, Greek yogurt, vanilla extract, cinnamon, nutmeg, ginger, cloves, baking powder, baking soda, and salt until smooth and homogenous.
06 - Spoon about 2 tablespoons of pumpkin mixture into each pre-baked granola shell.
07 - Sprinkle muffin cups with chocolate chips or pumpkin seeds as desired.
08 - Return to oven and bake an additional 10 to 12 minutes until filling is set and edges are crisp and golden brown.
09 - Allow cups to cool in the pan for 10 minutes before gently extracting. Transfer to a wire rack to cool completely.