While you can, of course, assemble each aspect of s’mores individually after toasting the marshmallow, stuffing the candy inside could speed up the process a little. Since Rolos are cylindrical, stuffing them inside marshmallows may keep them extra secure on the graham crackers. The sticky interior will hold the candy in place while the treat is roasted and assembled.
Other candies can improve the flavor of the s’mores, too, so long as you’re able to find sweets small enough to stuff inside the marshmallow. If you’re a fan of the sweet-and-salty combination, try swapping in a miniature peanut butter cup. The added peanut butter will make for a little bit of a savory addition.
If you want a little extra crunch in your dessert, that sweet-and-salty flavor can also be found in a bite-sized Snickers or Almond Joy. A Snickers bar will add chocolate, caramel, and crunchy peanuts to the s’more. An Almond Joy will include a tropical coconutty taste, which could be amped up with the addition of some fresh fruit or jam.