Sausage-Stuffed Spaghetti Squash

1 . Stage

Preheat the oven to 400 degrees F (200 degrees C). Cover a baking sheet with foil.

2 . Stage

Drizzle the squash flesh with olive oil and sprinkle with salt and pepper. Place both halves, cut-sides down, on the prepared baking sheet.

3 . Stage

Bake in the preheated oven until tender when pierced with a fork, 30 to 40 minutes.

4 . Stage

Meanwhile, heat a large skillet over medium-high heat. Cook and stir sausage, onion, and garlic in the hot skillet until sausage is browned and crumbly, 7 to 10 minutes. Add bell pepper and mushrooms and saute for 3 minutes. Drain and discard any grease and excess liquid.

5 . Stage

Stir in tomato sauce, black and green olives, and Italian seasoning, and bring to a simmer, about 5 minutes.

6 . Stage

Remove the squash from the oven. Flip over so flesh is facing up. Sprinkle 1/2 cup mozzarella cheese into each half, then divide sausage mixture evenly between the two. Sprinkle remaining mozzarella over top.

7 . Stage

Return to the oven and bake until cheese is melted and bubbly, about 10 more minutes.