Preheat oven to 350F and grease a muffin tin
Measure and sift flour into a medium-sized bowl
Add baking soda, spices and salt to flour and mix until combined. Set aside
Cream sugars with melted butter for 2-3 minutes
Mix eggs and vanilla into sugar/butter mixture
Mix in pumpkin and greek yogurt
Fold dry ingredients into wet and mix until just combined
Scoop about 2 tablespoons of muffin batter into each muffin tin
Bake for 18-22 minutes, or until tops are golden brown and toothpick comes out clean
Let cool for 10 minutes, remove from tins and let cool completely on cooling rack.
Enjoy!