I only have my grandchildren one or two evenings a week during term time, but when I do they have a snack, usually a cake, when they come out of school as they have a proper meal at lunchtime.
They eat their evening meal 5.30-6.00, often pasta with meat sauce and/or cheese, sometimes pizza or fish and chips, with a little salad or veg. Sadly they don't like beans, it would be a good quick meal to give them with tomato or cucumber which they love.
I give them cereal, eggs and toast every morning too, some days they are unfillable at the moment, must be a combination of the colder weather and the fact that they're growing.