Ingredients

• 2 tablespoons canola oil
• One 10-ounce package baby portabella mushrooms, sliced
• Kosher salt and freshly ground black pepper
• Reserved cooked onion from Spinach and Pasta Pie, recipe follows
• 2 teaspoons Italian seasoning
• 1/4 teaspoon crushed red pepper flakes
• 1 tablespoon chopped garlic
• Reserved spinach from Spinach and Pasta Pie
• Reserved cooked pasta from Spinach and Pasta Pie
• 1/4 cup chopped fresh basil
• 1/4 cup grated Parmesan
• 1 tablespoon olive oil
• 3 large eggs, divided
• Kosher salt and freshly ground black pepper
• 2 tablespoons canola oil, divided
• One 16-ounce box spaghetti, cooked according to package directions, drained
• 1 medium onion, chopped
• 2 teaspoons chopped garlic
• 1/4 cup milk
• 2 teaspoons Italian seasoning
• Half 4-ounce package crumbled feta cheese
• Two 10-ounce packages frozen chopped spinach, thawed and drained
• 1 plum tomato, sliced thin
• 1/4 cup grated Parmesan

Instructions

1. In a large skillet over medium heat, add the canola oil. When it is hot, add the mushrooms, season with salt and pepper, and cook until they are lightly browned and have given up their liquid, about 5 minutes. Add the reserved onions, Italian seasoning, red pepper flakes, and garlic and cook for 1 minute. Stir in the reserved spinach and cook until warmed through, about 2 minutes. Toss in the pasta and cook until it is warmed through, about 2 minutes. At the last minute, stir in the basil, cheese, and olive oil. Serve immediately.
2. Preheat the oven to 350 degrees F.
3. In a large bowl, beat together 1 egg with a generous pinch of salt and pepper. Whisk in 1 tablespoon canola oil. Add half the spaghetti (reserve the other half for another use). Toss it well to coat and press it into a 9-inch deep dish pie pan to form a crust.
4. In a skillet over medium-high heat, add the remaining oil. When it is hot, add the onion and cook until it is softened, about 5 minutes. Add the garlic and cook for 1 minute. Remove from the heat and set aside (reserve half the cooked onions for another use).
5. In a large bowl, whisk together the remaining 2 eggs, milk, Italian seasoning, and salt and pepper, to taste. Stir in the cheese, spinach (reserve 3/4 cup spinach for another use), and remaining half of the cooked onions. Pour the mixture on top of the spaghetti pie crust, top with tomato slices, and sprinkle with Parmesan. Place onto a baking sheet and bake until the pie is set and golden brown, 30 to 35 minutes. Remove and let rest for 10 minutes before slicing.