We bought discounted strawberries for dessert and found mould. How do I change the plan without being accused of wasting them?

My partner held the bargain punnet beside the saucepan. "We'll cut those bits off. It's all getting cooked anyway." Several strawberries had visible mould; they weren't simply a little soft.

I'd agreed to make a strawberry topping for Sunday dessert, and buying the discounted fruit had been my suggestion. I felt responsible for both the failed bargain and the new shopping trip. Before preparing it, I checked the [Food Standards Agency's home food advice](https://www.gov.uk/government/publications/home-food-fact-checker/home-food-fact-checker), which says food containing mould should not be eaten and that removing the visible part doesn't guarantee removal of unseen toxins. I won't use the mouldy strawberries for the topping.

My partner says I should at least try to salvage the plan rather than replace the fruit at full price. We could change dessert using something already in the cupboard instead. How would you own the disappointing purchase without accepting that the only responsible response is to use these berries?