Heat oven to 350°. Grease a loaf pan with butter or oil. If you're using a mold with crevices, consider using a pastry brush to get in to all the nooks and crannies of the mold. Sprinkle with a tablespoon of sugar and tap the pan to make sure the sugar coats the whole loaf pan.
Peel three very ripe bananas and mash them with a fork. Set aside.
In a large mixing bowl, use a handheld mixer to cream together the butter, oil, and sugar until paler and fluffy (2 minutes).
Next, add in the eggs and vanilla extract and mix until incorporated.
Add in the Greek yogurt, bananas and the bourbon caramel sauce and mix until just incorporated.
Add in the flour, baking powder, baking soda, and salt and mix until combined.
Using a spoon or spatula, fold in the chopped pecans.
Pour the batter into the prepared mold and bake in oven for 60-70 minutes (until the middle is set and a toothpick or knife inserted comes out clean).
Let cool 10-15 minutes then carefully release from pan and cool on a cooling rack. Slice and enjoy! This bread will keep for several days if tightly wrapped. It also freezes very well.