Here's Kimber's recipe...
Willa's Birthday Cupcakes, S'mores Edition
1 box devil's food cake mix
1 small box chocolate pudding
1 cup sour cream
1 cup milk
4 eggs at room temperature
1 cup good milk chocolate chips, gently melted
2 cups miniature marshmallows, divided
1 sleeve graham crackers (i.e., 1/3 of a normal box of grahams -- I think it's 12 whole crackers)
Mix together all but the last three ingredients and beat on high speed for three minutes. Then, fold in the melted chocolate, 1 cup marshmallows, and the crackers, crumbling the grahams very roughly with your hands (pieces about as big as a quarter are perfect). Mix until just barely combined, then put into cupcake liners and top with addition marshmallows (I suggested 3, but since Hettie and Phineas were in charge of the process, it ended up being more like 17). Bake at 350 for about 22 minutes, or until the top is set (as best you can discern through all that toasted mallow!).
Weird and Delicious Graham Cracker Frosting
(inspired by this, which was inspired by this, which I looked up because of this)
In a blender, make an unusual smoothie using 1/3 cup milk, 2 sleeves graham crackers (i.e., the rest of the box that you got to make the cupcakes), along with 1/4 cup powdered milk, a generous pinch of salt, and 3 Tbs brown sugar. Then, using your mixer, cream 6 Tbs butter with 1 Tbs of powdered sugar. Slowly incorporate your cracker sludge, and whip it to a frenzy, adding more milk or powdered sugar as needed to get your desired consistency.