In a medium saucepan, combine the sweetened condensed milk, pumpkin puree, butter, and cinnamon. Cook over medium heat, stirring constantly, until the mixture reaches a low boil and thickens. Continue stirring until the mixture pulls away from the sides of the pan and takes about 5-8 seconds to come together. Turn off the heat and transfer to a plate or bowl. Cool slightly, then refrigerate for 1 hour.

Pour sugar into a bowl and set aside. Line a tray with parchment paper. Butter your hands or use spray oil, then scoop about 2 tablespoons of the mixture and roll into balls. You can also use a scoop, which ensures even sizes. Roll each ball in sugar and place on the tray. Repeat until all the mixture is used.

Using a toothpick, gently press lines into each ball to create a pumpkin shape. If your thumb makes a small dent on top, it’s fine.

Place a chocolate chip in the center of each pumpkin and press down slightly. Serve and enjoy!