Bring butter, sugar, corn syrup and 1 teaspoon cinnamon to boil in saucepan on medium‑high heat, cook for about 2 minutes. Meanwhile, combine next 4 ingredients in medium bowl.
Place 26 crackers in single layer on parchment‑covered baking sheet; top with nut mixture.
Bake 12 minutes, top remaining crackers to make 26 sandwiches.
Microwave marshmallow creme in small microwaveable bowl on HIGH for about 15 seconds. Stir remaining cinnamon; drizzle over sandwiches, repeat with melted chocolate.
Refrigerate for 30 minutes.
Recipe by In The Kitchen With KP at https://www.inthekitchenwithkp.com/recipes/simplify-your-holiday-planning-with-nabisco-and-an-easy-pecan%e2%80%91apple-ritzwich-recipe