Preheat oven to 425 degrees and line two 12 cup muffin tins (24 total) with paper liners or lightly spray with non stick spray
In a medium mixing bowl, combine flour, baking powder, baking soda, pumpkin pie spice, and salt with a whisk
In another medium mixing bowl, combine canned pumpkin, yogurt, 1 cup granulated sugar, brown sugar, 2 whole eggs, and oil
Add dry ingredients to the wet ingredients and fold with a spatula to combine (do not over mix)
Fill each cup ¾ of the way to the top.
For the cream cheese topping, in a bowl, combine 8 oz room temp cream cheese, granulated sugar, egg yolk and vanilla
Place a 1 teaspoon dollop of the cream cheese mixture on top of each batter filled cup
With a toothpick, swirl the cream cheese into each muffin in a figure 8 pattern until slightly mixed
Bake at 425 for 7 minutes. Then turn the heat down to 350 (do not open the oven door) and bake for 8-10 more minutes or until a toothpick comes out clean.
After letting set for 5-10 minutes, remove from the muffin tins and let cool on a wire rack.