Prepare your banana, pecans or apple. Peel and sliced bananas, roughly chop pecans or core and dice the apple. Set aside.
In a skillet over medium heat, melt the 4 tablespoons of butter.
Add the 1 cup of brown sugar to the butter and continue cooking about 3 minutes, stirring often, until the butter and brown sugar are well combined.
Place the prepared bananas, pecans or apple in the skillet with the brown sugar and butter mixture.
Continue cooking over medium heat, stirring often, until well combined and the fruit (if you're using it) is softened. For bananas and pecans, this is about 2-3 minutes. For apples, this is about 4-5 minutes.