Step 1

Preheat oven to 350º F and line an 8x8-inch baking dish with parchment paper or aluminum foil.

Step 2

In a medium bowl, whisk together flour, baking powder, cinnamon and salt, then set aside.

Step 3

In a large bowl or mixer, cream together butter and brown sugar for 2-3 minutes, or until fluffy and lightened in color.

Step 4

Beat in eggs, then add mashed bananas and vanilla extract until combined.

Step 5

Gradually add in flour mixture until incorporated, then fold in butterscotch chips and walnuts.

Step 6

Transfer batter to lined baking dish and place in oven. Bake for 25-35 minutes, or until toothpick inserted in center comes out clean.

Step 7

Remove from oven and set aside. Turn on oven broiler.

Step 8

While cake bakes, prepare toffee sauce by whisking together heavy cream and brown sugar in a medium saucepan over over medium heat. Add butter and bring to a boil, making sure to stir continuously.

Step 9

Reduce heat to medium-low and continue boiling for 6-8 minutes, or until mixture is thickened.

Step 10

Remove from heat and whisk in salt and vanilla extract.

Step 11

Pour 1/2 cup toffee sauce over baked pudding, then place in oven and broil for 1-2 minutes, or until bubbly.

Step 12

Remove from oven, top with more sauce or sliced bananas, if desired, and serve with whipped cream. Enjoy!