I work in a day nursery as a kitchen assistant & last week at work the Chef was away so I was on my own in the kitchen with hardly no help. Our menus work on a 3 week rota so as our supplier didn’t send in everything I had to work with what I literally had in. Some parents complained about the food as it wasn’t being followed day by day which my Boss told me about however I could only work with what I had & did go slightly off the menu. Fast forward to today the Chef had a go at me for going off the menu cos parents complained & apparently I did my own thing on the menu & also said that she was short on 2 lunches for this week cos I went off menu and used up what she was gonna use this week, I explained that it was because I had to work with what I had but she was having none of it. My Boss has sorted things out to get some things from another nearby nursery however am I in the wrong here considering the parents complained about me going slightly off the menu?