01 -
Line a 13x9 glass baking dish with parchment paper. Set aside.
02 -
In a large saucepan, heat granulated sugar, butter, salt, ¼ cup cinnamon sugar, and heavy cream until combined. Bring to a rolling boil and stir continuously for 4 minutes.
03 -
Remove from heat. Quickly stir in white chocolate morsels, marshmallow cream, and 2 tablespoons cinnamon sugar. Whisk vigorously until smooth. Be patient, this may take a couple of minutes and works best with an electric mixer.
04 -
Pour fudge into the prepared pan and refrigerate for 3 hours until hardened.
05 -
Remove from pan, remove parchment paper, and place fudge on a cutting board. Cut into circles using a 1 ½-inch circle cookie cutter or into small bite-sized pieces.
06 -
Whisk together powdered sugar, maple syrup, and heavy cream until smooth. Pour into a ziploc bag, snip a tiny piece off the corner, and drizzle over fudge. Sprinkle immediately with 1 teaspoon cinnamon sugar. Place fudge back in refrigerator until icing hardens, about 15 minutes.