Preheat the oven to 350F (180C).
In a small bowl, combine the sugar and the cinnamon as well as the vanilla extract and the 2 other spices if desired. Reserve.
About 30 minutes later, slice the bananas in half crosswise, and then lengthwise. You'll end up with 4 halves per banana.
In a large non-stick frying pan, over medium heat, heat the butter for about 2 to 3 minutes or until it melts and bubbles. Add the banana halves and pan-fry them until both sides are golden brown. Remove from heat, then drain the bananas on paper towels. Reserve.
Grease a 5" x 9" glass baking pan with additional unsalted butter or butter flavor cooking spray. Arrange the reserved bananas, lining up every four halves parallel and closely together in a single layer. You will have two sets of bananas.
Top each set with the toasted pecans (optionaand then a slice of cheese of approximately the same size. Sprinkle the cheese generously with the sugar/spice mixture.
Place the glass pan in the preheated oven and bake for 5 to 7 minutes or until the cheese is melted.
Remove each portion carefully with a spatula and place on a plate. Serve immediately. It can be accompanied by a scoop of vanilla or coffee ice cream drizzled with a warm chocolate sauce (see below, or use store-bought).