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1
Set oven to 325 degrees.
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2
Grease a 9-inch round cake pan (make certain to spray the bottom of the pan generously with non-stick cooking spray).
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3
For the topping: in a heavy-bottom saucepan combine sugar and butter; stir over low heat until butter melts and the mixture is well blended.
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4
Pour into cake pan, and spread to coat the bottom of the pan.
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5
Drizzle the maple syrup over the butter/sugar mixture, then sprinkle with chopped nuts.
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6
Place the long banana slices in concentric circles on top of the nuts, overlapping slightly but covering the bottom.
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7
For the cake: stir together flour, baking powder, cinnamon and salt in a medium bowl.
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8
Beat in sugar and butter in another bowl until creamy (about 3-4 minutes).
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9
Add in egg and vanilla; beat until smooth, light and fluffy.
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10
beat in flour mixture alternately with milk.
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11
Spoon the batter over the bananas in the pan.
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12
Bake for about 50-55 minutes, or until cakes tests done.
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13
Transfer cake to a rack and run a knife around the sides of the pan.
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14
Cool cake for 30 minutes.
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15
Place a plate over pan and invert onto plate.
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16
Let stand 3 minutes upside-down with plate on top, then gently lift off pan.
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17
Serve with whipped cream.