75 gms unsalted butter, softened to room temperature
100 gms granulated sugar
1 large egg
1 teaspoon vanilla essence
3 large bananas mashed
60 gms yogurt
1 Tablespoon ground cinnamon
50 gms dark brown sugar
135 gms semi-sweet chocolate chips
70 gms chopped walnuts
Preheat oven to 180°C. Grease a 8x8 baking pan.
In a medium bowl, add flour, cinnamon, baking soda, baking powder, and salt together. Set aside.
Cream the butter and sugar on high speed until creamy, about 1 minute. Add egg beat it lightly. Add vanilla extract, mix well. Add the mashed banana and yogurt and turn the mixer on high and beat until creamy, about 1 minute. Now add the dry ingredients into the wet ingredients. Turn the mixer on low and slowly beat until combined. Do not overmix.
Make the streusel by combining all of the streusel ingredients into a small bowl. Layer half of the batter into the prepared baking pan. Top with half of the streusel. Repeat with the rest of the batter and streusel. Bake for 55-60 minutes.