There’s many ways to prepare the spaghetti squash. Microwaving is quicker, but we find that roasting or baking the squash in the oven gives more squash flavor. Both are still delicious. The recipe is written to roast and there is a note at the bottom of the recipe for microwave instructions.
Preheat Oven to 375°F. Oil a sheet pan with 1 Tablespoon of olive oil.
Slice spaghetti squash in half lengthwise. (Kitchen tip: Use the tip of the knife to first pierce the squash to get the cut started. Once started, you don’t have to slice everything in half, just through the rind working around the diameter.) Scoop out the seeds and loose strands, then place cut side down on the prepared sheet pan.
Bake for 45 minutes, or until the squash flesh separates easily into strands with a fork. Using a towel to hold or wait until cool enough to handle, finish loosening the “spaghetti" from the shells and set aside.
Pinch the sausage into small balls. Set aside.
Heat a large sauté pan over medium heat. Heat remaining 1 Tablespoon of olive oil in pan, then add onion and garlic. Cook until soft, about 1 minute, then add sausage. Cook until bottom side of sausage starts to brown, then stir. Continue cooking and stirring occasionally until the sausage is cooked through (@ 2-3 minutes depending on heat and size of sausage).
Stir in the the oregano and then add spaghetti squash strands to the sausage. Continue cooking until spaghetti squash is heated through (usually less than a minute.)Remove from heat. Toss in Parmesan cheese. Season with salt and pepper to taste. Garnish with desired optional parsley and/or red chili flakes. Serve immediately.
Notes
Note 1: Cooking the spaghetti squash in the microwave: Cut the squash in half and seed. Place cut side down in a microwave safe dish filled with 1-inch of water. Microwave on high until tender (about 10 minutes). See the post for more information: Microwaving Spaghetti Squash