• Preheat oven to 350F. Grease a 9” x 13” casserole dish and set it aside.
• In a medium-sized bowl, combine the flour, baking powder, baking soda, cinnamon, and salt until well mixed. Set aside. 
• In a large bowl, beat together the greek yogurt and sugars for 2 minutes until light and sugar no longer appear grainy.
• Add the mashed bananas, eggs, buttermilk, and vanilla extract. Beat until well combined. 
•  Add half of the flour mixture to the wet ingredients, beat well, and then add the remaining half, beating until no dry patches remain. 
•  Pour the batter into your prepared casserole dish and bake for 40-50 minutes.

How to Make Cream Cheese Frosting

• Combine the butter and sugar together in a large bowl until completely combined. Beat in the vanilla extract.
• Start off by adding 2 cups of powdered icing sugar, beat well, then add additional as needed.
• Use an offset spatula to spread the cream cheese frosting on the cake.