In a large skillet, heat 1 tablespoon of olive oil over medium heat. Add breakfast sausage, breaking it into bite-sized pieces, and cook until browned and crispy, about 5-7 minutes. Transfer to a plate and set aside.

In the same skillet, add another tablespoon of olive oil. Sauté the finely chopped onion over medium heat for about 3 minutes, or until softened and translucent.

Stir in the diced butternut squash and cook undisturbed for about 5 minutes. Then stir again and continue cooking for another 5 minutes until tender and starting to caramelize.

Add the diced apples to the skillet. Combine and cook for an additional 5 minutes, stirring occasionally until both are tender.

Sprinkle in the ground cinnamon, nutmeg, salt, and pepper. Stir well to ensure an even coating of spices.

Return the cooked sausage back to the skillet. Gently mix everything together, allowing it to heat through for about 2-3 minutes.

Remove from heat and sprinkle with freshly chopped parsley. Serve warm.