In an hour we will know more. We will know then whether the website I found to change cups in grams (how do you fill butter in a cup?) and Fahrenheit to Celsius did ok.
I left earlier at the office because I felt I must bake banana bread right now. I checked every supermarket on my way home (ca. 20 miles) for ripe bananas and now it's in the oven.
I started with Karen's recipe because I did feel better about the butter than about the oil.
I changed very little (it will be difficult to sell me a recipe so that I change absolutely nothing ). I added a little lime juice to the bananas. Maybe next time I'll skip the walnuts, add lime juice and rhum and call it Jamaican Banana Bread.

Karen you skipped 2 important informations (maybe because you have a bunny:

You must first wipe the cat hair out of your big baking bowl.
Then you must wipe the cat hair out of the baking pan (it stands in a closed drawer under the oven where the cats NEVER get in but it seem to be impossible here to take something from the dishwasher without finding a reminiscence to TigriFiluzi there.