Just follow the recipe here. Some modifications though. You're basically making three batches of marshmallows, but one batch at a time.
Graham Cracker Layer- (bottom layer)
Substitute 3/4 cup sugar for 1/2 cup sugar & 1/4 cup brown sugar
Substitute corn syrup for honey
And 1 cup of crushed graham crackers that you will stir in at the end of the fluffing process.
Then pour into pan.
Vanilla Layer- (middle layer)
Nothing changes in this layer from the recipe link
pour over the graham cracker layer.
Chocolate Layer- (top layer)
Substitue 1 teaspoon of vanilla extract for 2 tbsp of cocoa powder
Stir cocoa powder instead of beating it.
pour over the vanilla layer
There's a Vine quick video of the process.
Let it sit for 6 hours/ overnight.
Marshmallows are usually pretty sticky when its done. When you turn it over to take out of the pan, I actually had an extra 1/4 cup of crushed graham crackers and stuck it to the now top layer of marshmallow, and coat the rest with the powdered/corn starch mix.
They actually tasted really good. All three layers had their distinct taste, that all together it kind of did taste like a s'more!
Here's the big box of s'mores I gave my sister!
I think this won't be my last time making marshamllows. As long as you have basic vanilla marshmallow recipe, it's very easy to try new flavors!