Preheat oven to 350 degrees F.
Whisk together eggs and egg whites.
Press garlic, chop pepper and mushrooms.
Add eggs, spaghetti squash, and salt to a bowl and stir to combine. Set aside.
Add oil to skillet and sauté garlic, peppers, and mushrooms until mushrooms release their liquid and peppers are soft. Add spinach and continue sautéing until wilted. Season with salt and pepper.
Pour egg/squash mixture over the vegetables, using fork to equally distribute squash. Bake for about 20 minutes until center is set.
Remove from oven, slice, and serve.
Heat the oven to 400°F. Place squash on pan and roast whole for about 10 minutes until soft enough to cut in half. Carefully, cut the squash in half lengthwise and scrape out the seeds [you may need to wait for squash to cool a bit]. Place the squash halves back in oven, cut-side up on a baking sheet and roast until tender, about 40 more minutes. Using a fork, rake across flesh to remove squash from skin.
Serving Size 6 Servings