Step 1

Preheat oven to 350 degrees F. Coat an 8-inch square baking dish with cooking spray.

Step 2

Spread half the batter in baking dish. Top with banana slices, then drizzle with 3 tablespoons warmed hazelnut spread. Top with remaining batter.

Step 3

Bake 30 to 35 minutes, or until toothpick inserted in center comes out clean. Let cool, then spread remaining hazelnut spread over top of cake. Cut into squares and serve.