Pumpkin Cream Cheese Muffins

1. Mix cream cheese, powdered sugar, and vanilla extract; chill. 
2. In one bowl, combine all dry ingredients for the muffin batter. In another bowl, combine all wet ingredients for the muffin batter. Then, mix the wet and dry ingredients together until just combined.
3. Fill muffin cups ¾ full with batter, add a dollop of cream cheese filling in the center of each, and top with pumpkin seeds (optional).
4. Bake at 350°F for 18-22 minutes, or until a toothpick inserted comes out clean.