In the evening before bed:
Soak 2 cups oats in 1 cup water plus 1 tbs vinegar, overnight. Cover with foil, plastic wrap or dish towel.
The next day:
Preheat oven to 375 degrees. Grease 8 inch square baking pan/dish.
Roughly chop 1 cup of toasted walnuts. You can either chop first or toast first, it doesn't matter.
Slice one banana in 1/4 inch thin rounds. The size doesn't have to be exact, just not too thin or too thick. Place the bananas around the bottom of the baking pan, sprinkle with cinnamon, top with a few of the toasted walnuts (not all of them just a few,) drizzle with honey.
Melt 4 tbs of butter and add to the oats. Mix 1 egg with 1/2 cup milk and 1 tsp vanilla. Now add this to the oat/butter mix.
Combine 1/2 cup sugar with 1 tsp baking powder with 1/2 tsp baking soda with 1 tsp salt, and 1 tsp cinnamon, stir and add to oat mixture.
Roughly chop one more banana add it and the walnuts to the oat mixture.
Pour batter over the bananas, walnuts and honey. Bake at 375 degrees for 25-30 mins. When cooled you can turn over, slice and serve with fresh whipped cream.
To whip cream pour 1/4 cup - 1/2 cup cold heavy whipping cream into a bowl and whisk vigorously until desired firmness is achieved. I like mine a little bit loose.