If you’re committed to trying a s’more, you could substitute digestive biscuits. https://cooking.stackexchange.com/questions/50371/is-there-a-super-close-substitute-for-graham-crackers
Just make sure your marshmallows get browned and toasty somehow. Best is slightly crispy on the outside and melty on the inside
What was you recipe for the crust and how did you bake it?
If you’re committed to trying a s’more, you could substitute digestive biscuits. https://cooking.stackexchange.com/questions/50371/is-there-a-super-close-substitute-for-graham-crackers
Just make sure your marshmallows get browned and toasty somehow. Best is slightly crispy on the outside and melty on the inside