Best Banana Bread Ever

Preheat oven to 350 degrees F.

Sift together flour, baking soda, baking powder, salt and 1/2 cup of sugar.

In a separate bowl, cream together the butter and remaining 1 1/2 cups sugar till fluffy. Add eggs one at a time and beat well. Add mashed bananas, vanilla and yogurt one at a time, beating well after each addition.
Stir in the flour mixture.

To prepare the topping, mix together the chocolate chips/walnuts, cinnamon, and dark brown sugar.

Pour in half the batter into a greased pan. Top with half the topping. Pour in remaining batter and finish with the rest of the topping.

Bake for 60-75 minutes. Cake is done when a skewer inserted in the center comes out clean.