Preheat the oven to 350º F.
Grease and flour a loaf pan, or line with parchment paper.
Cream together butter and sugar with the whisk or paddle attachment in your mixer. Add eggs, vanilla, and crushed bananas. Mix until well combined.
In a separate bowl, mix together the flour, cinnamon, and salt until evenly combined.
Add to your creamed mixture until just combined. This is easiest done by hand using a spatula.
Pour into the prepared loaf pan. Add the toppings, if desired.
Bake at 350 for 55 minutes to 1 hour. You can gently press the top of your loaf to test doneness or use a toothpick - when inserted in the middle of the loaf it should come out clean.
Cool in the pan for 5 minutes and then on a wire cooling rack for at least 10 minutes before slicing.