Preheat the oven to 375F.
Line a 9x13 pan with parchment paper and spray with cooking spray.
To a bowl, add butter, greek yogurt and sugars. Cream together with a hand mixer.
To the bowl, mix in eggs and vanilla.
In a separate bowl, add your dry ingredients. Whisk until combined.
Add your dry ingredients to your wet ingredients and stir until smooth.
Pour batter into the lined baking pan.
Top with more brown sugar and sprinkle cinnamon on top.
Bake for 18-20 minutes at 375F.
Remove and allow to cool before slicing and serving.