Preheat oven to 350°F.
Line muffin tin with paper liners.
Mix cream cheese, sugar, and yolk.
Set cream cheese mixture aside completely.
Whisk flour, spice, baking powder, soda.
Beat eggs, sugar, oil until smooth.
Add pumpkin puree to wet ingredients.
Fold dry mixture into wet mixture.
Fill muffin cups halfway with batter.
Add one spoon of cheese filling.
Cover with remaining muffin batter completely.
Bake for 20 minutes until golden.
Cool muffins for 10 minutes before serving.