Do you test your BG levels?
I love peanut M &Ms and allow myself a small handfull, ( that is the palm of the hand any more than that is a fistfull) per day and they do not affect my levels but a large bag

I think that's asking for trouble. Agreeably, the nuts are good and only minimum chocolate on the coating but carbohydrate is sugar and m & ms contain 58.8grms per 100 grm of which 53.3 sugars per 100 grms this is much too high. If you are testing take a reading an hour after eating them and another reading after another hour. Your levels should be between 4.5 and 8.5 I would be surprised if you were between those figures, a treat is a treat but you are way beyond a treat with a large bag, you are just feeding yourself sugar and as a diabetic you should know better