Preheat oven to 375 degrees F.
Spray a 13 by 9 by 2-inch glass baking dish with nonstick spray. Place squash, cut side down, in prepared dish. Pierce each squash half several times with a toothpick or skewer. Bake until squash is tender, about 45 minutes.
Using a large spoon, scrape squash into the bowl of a food processor, discarding the skin. Add 1 1/2 cups broth and the cinnamon and puree until smooth. Add remaining broth if needed. Transfer puree to a heavy large saucepan. Stir over medium heat until heated through. Season, to taste, with salt and pepper. Ladle soup into bowls and top each with 3 Cheddar Cheese Coins and chives or scallions, if desired.
Preheat oven to 400 degrees F.
Line a baking sheet with parchment paper. Drop 1 tablespoon shredded Cheddar onto parchment. Sprinkle 1 tablespoon ground pistachios onto the cheese. Repeat to make 12 coins, leaving approximately 2 inches of space between each. Bake for about 10 minutes or until the cheese just begins to brown. Remove from heat and let cool. Top each soup with 3 Cheddar Cheese Coins just before serving.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.