In a large bowl, whisk together flour, graham cracker crumbs, brown sugar, baking powder, baking soda, salt, and cinnamon. In a separate bowl, beat the eggs, then add buttermilk, melted butter, and vanilla. Combine wet and dry ingredients just until incorporated. Let rest for 5 minutes.

Pro Tip: A few coarsely crushed graham cracker pieces folded in at the end add an extra crunch.

Step 2: Cook the Waffles

Preheat your waffle iron. Lightly grease with oil or butter. Pour in about 1/2 cup of batter and cook according to your iron’s instructions, typically 3–5 minutes, until golden and crisp.

Pro Tip: Resting waffles on a cooling rack prevents sogginess while you cook the rest.

Step 3: Assemble the Sandwiches

Place one waffle on a heat-safe surface. Layer with marshmallows and chocolate, then top with another waffle.

Pro Tip: Don’t overfill—just a handful of marshmallows and a sprinkle of chocolate gives the perfect melt.

Step 4: Melt to Gooey Perfection

Place waffle sandwiches on a parchment-lined baking sheet. Broil for 30–60 seconds, just until marshmallows puff and chocolate starts to melt. Keep a close eye!

Optional: Use a kitchen torch for precise marshmallow toasting.

Step 5: Slice and Serve

Let cool slightly. Slice into halves or quarters. Garnish with toppings if desired.

Pro Tip: A dusting of crushed graham crackers adds texture and extra flavor.