Sainsbury’s head of sustainability Paul Crewe said: “We want to encourage shoppers to give bruised bananas a chance. Avoidable food waste is a growing problem in the UK, and we can all do our bit to make a difference.
“So if the thought of eating a banana that is slightly bruised really puts you off, throw it into a smoothie or banana bread mix instead of the bin."
Bananas are the country’s favourite snack, with Brits eating on average three a week and one in five eating one every day.
Sainsbury’s is trialling measures to reduce its food waste, including making banana bread with fruit on or past its sell by date.
Mr Crewe added: “From this week, we'll be trialling loaves of banana bread baked fresh in store, using fruit at or after its sell-by date.
“The bread will be available at selected in-store bakeries, and we estimate that this trial alone will save more than 1,000 bananas."