Instructions:
Preheat Oven & Prep Tin: Preheat your oven to 375°F (190°C) and line the cups of a muffin tin with cupcake liners.
Combine Dry Ingredients: In a bowl, sift or whisk together the flour, pumpkin pie spice, baking soda, and salt. Set aside.
Combine Wet Ingredients: In a separate bowl, blend together the granulated sugar, brown sugar, and pumpkin puree. Add the eggs, vegetable oil, and vanilla extract, and continue to mix until well blended.
Mix Batter: Add the dry ingredients to the wet ingredients and stir until the batter is smooth and well combined.
Add Swirl: Spoon the muffin batter into the prepared cupcake liners, filling them about halfway. In a separate small bowl, beat together all the ingredients for the cream cheese swirl (cream cheese, granulated sugar, egg yolk, and vanilla extract). Place a spoonful of the cream cheese mixture into the center of each cupcake liner. Use a toothpick or small knife to gently swirl the cream cheese into the muffin batter.
Bake: Bake for 20 minutes, or until a toothpick inserted into the center of a muffin comes out clean.
Cool & Serve: Let the muffins cool completely before serving.
Enjoy these delicious, swirled muffins!