Step 1

Preheat oven to 400ºF. Spray a baking sheet with nonstick spray.

Step 2

Place squash halves on the baking sheet, cut sides down. Bake until soft, 25–30 minutes.

Step 3

Meanwhile, bring a skillet sprayed with nonstick spray to medium-high heat. Add sausage coins. Cook and stir until browned, about 3 minutes. Add spinach. Cook and stir until wilted, about 1 minute.

Step 4

Scoop out the insides of the squash, and place them in a large bowl. Add mozzarella, cream cheese, 1 tsp. garlic powder, salt, and pepper. Mash and mix until cheeses have melted and mixture is uniform. Add water chestnuts, sun-dried tomatoes, and sausage/spinach mixture. Mix well.

Step 5

Season squash halves with remaining 1/2 tsp. garlic powder. Distribute filling among the squash halves.

Step 6

Bake until hot, about 3 minutes.