Slice the baguette in half on the bias, then slice each piece again lengthwise to create four pieces. Butter the bread lightly and grill.
Once the bread is cooled, spread 1 oz of mayo and 1 oz of cranberry chutney on each half.
Add a good layer of baby spinach and onions on one side then the chicken, brie and milled pepper on the other; combine together into a sandwich.
Wrap in butcher paper or parchment paper and you’re ready to go.