01 -
In a medium bowl, mix brown sugar, flour, and nuts. Stir in melted butter with a fork until crumbly. Set aside.
02 -
Preheat oven to 180°C (350°F). Grease and flour an 8-inch cake pan or line with parchment paper.
03 -
In a large bowl, sift together the cake flour, baking powder, baking soda, and salt. Set aside.
04 -
In a large bowl, cream together softened butter and sugar until light. Add eggs one at a time, beating after each addition.
05 -
In a separate medium bowl, use a wooden spoon or spatula to combine mashed bananas, vanilla extract, and plain yogurt.
06 -
Alternately add flour mixture and banana mixture to the butter mixture, mixing with a wooden spoon or spatula until smooth.
07 -
Pour half the batter into the prepared cake pan and layer with half the crumb topping. Add remaining batter, then top with remaining crumb topping. Bake for 50–60 minutes. Test doneness with a toothpick.
08 -
Let the cake cool completely before drizzling with your favorite caramel topping. Enjoy!