Examining the Nutritional Value:
The large pink marshmallows were 25g and 85 calories each. As there are 20 pieces in 500 grams, that would be 1700 calories for one batch of this treat from the marshmallows alone. (A photo of them with a size comparison, follows this recipe)
Butter is 778 calories for 110grams
Honeycomb cereal is 250 calories a cup. There are 12 cups at a total of 3000 calories for the "healthy breakfast cereal" alone
Total Calories per Batch: 5478
Let's round that up to 5500 calories. This makes 4 lunch bag sized brown paper bags full of loose clumps of the treat. Likely 5 generous servings per bag. Let's say there are 20 servings in this batch. That would be 275 a serving and I promise you, most people would easily eat 2 servings. So, make this sparingly or for very special silly occasions when there are athletes only at the event who can afford the calories!
Imagine one cookie sheets filled with this treat divided into 10 portions. That is the amount you get for 275 calories. Not so much.