Preheat oven to 325°F.
Add 1/2 pound butter, margarine and 2 pounds + 13 ounces granulated sugar to a large mixing bowl.
Using a mixer, cream mixture together until soft and light (about 8 minutes on speed 2). Scrape bottom and sides often.
Still on Speed 2, with mixer running, very slowly add eggs slowly, about 1 egg at a time or 1/2 cup at a time, if using liquid eggs. Be sure eggs are completely incorporated and smooth after each addition.
Switch to Speed 1. In 3 additions alternately add milk and flour mixing and scraping after each addition until incorporated. You should end with flour. Batter should be smooth and emulsified (not separated).
Still on Speed 2, with mixer running, add in the vanilla.
Scrape bowl and mix until smooth.
Spray a 1-quart loaf pan with non-stick spray. Coat with flour , tapping pan upside down to remove any excess flour.
Pour prepared batter into prepared pan, filling 3/4 full.
Place pan in preheated oven on the middle rack. Bake for 1 hour.
To test doneness, insert a wooden skewer in the middle of cake. When done skewer should come out dry.
When done, remove from oven and cool on a rack.
Pour 2 tablespoons granulated sugar onto a plate.
Place banana slices into sugar and turn until coated.
Place 2 tablespoons butter in a medium skillet.
Place skillet over medium heat.
When butter is melted and hot, add suger-coated banana slices, just as many as will fit flat on the bottom of the skillet. Do not crowd or stack.
Sprinkle brown sugar over slices.
Cook until golden and syrupy, turning to cook other sides, about 5 minutes.
Remove to a plate that has been sprayed with non-stick spray.
Repeat with remaining slices, adding more butter and brown sugar, if needed, until all are cooked.
Remove pan from heat.
Sprinkle bananas evenly with cinnamon.
Place a slice of pound cake on a serving plate slightly off to one side (See photo above for how this and remaining plating steps should look).
Add 3 slices caramelized bananas beside slice onto open plate.
Drizzle with a bit of the sauce remaining in the cooking pan, if desired.
Drizzle hot fudge sauce over all.
Dust a bit of powdered sugar beside slice.
Place a scoop of vanilla ice cream atop pound cake slice.
Top ice cream with chocolate pieces or curls.
Serve.