4 scallions, thinly sliced, white and green
parts separated
1/2 teaspoon cayenne pepper
Kosher salt and freshly ground black pepper
1 cup half-and-half
2 cups shredded rotisserie chicken (skin and
bones discarded)
3 cups shredded Cheddar
Directions
Preheat the oven to 425 degrees F. Cut the
squash in half crosswise using a serrated knife. Dig out and discard the seeds
with a spoon. Place into an 8-by-8-inch microwave-safe casserole dish with 2
tablespoons water. Cover the dish with plastic wrap and microwave on high until
the squash is very tender and the inside can easily be flaked with a fork, 13
to 14 minutes. Use a fork to scrap the sides of the squash, separating the
strands. Leave the scraped strands in the squash. Drain and dry the casserole
dish.
Meanwhile, heat the oil in a large oven-proof
skillet over medium-high heat. Add the mushrooms and cook, stirring often, until
they have released most of their moisture and start to brown, about 5 minutes.
Add the bell pepper, scallion whites, cayenne pepper, 1 teaspoon salt and a few
grinds of pepper. Cook, stirring, until the peppers are soft, about 5 minutes.
Add the half-and-half and bring to a boil. Reduce the heat to medium and simmer
until the liquid has reduced slightly and starts to thicken, 5 to 7
minutes.
Fold in the chicken and 2 cups Cheddar and stir
until the cheese has melted. Add the spaghetti squash strands and stir until
well combined. Transfer the squash mixture to the casserole dish and sprinkle
the top with the remaining Cheddar. Bake until the cheese is melted and
bubbling, 17 to 20 minutes. Let rest 5 minutes. Sprinkle with the scallion
greens before serving.