Preheat oven to 325 degrees F. Place naan on a baking sheet lined with aluminum foil or parchment paper. In a small bowl, combine ¾ cup brown sugar, cinnamon and butter and stir until ingredients are combined. Spoon mixture over flatbread and top with walnuts, followed by additional two tablespoons brown sugar.
Bake 8-10 minutes or until sugar mixture begins to melt and naan begins to brown. Let cool slightly.
Before serving, stir sugar and milk together, using the paddle attachment of a stand mixer or an electric hand mixer, until smooth. Spoon icing into a zip-top plastic bag. Snip 1 corner of bag, and drizzle icing over warm flatbread.
Recipe by In Good Taste at https://ingoodtaste.kitchen/deconstructed-cinnamon-roll-flatbread/