- In an 8” nonstick sauté pan, heat 1 tablespoon of the olive oil over medium heat. 
- Add the potato and cook, turning often, until tender and golden, about 10 minutes.  Season with salt and pepper. 
- Remove the potato slices with a slotted spatula and set aside in a bowl. 
- Add 1 tablespoon oil to the same pan and fry the zucchini, turning once, until tender and slightly golden, about 4 minutes. Add the basil and season with salt and pepper. 
- Using the slotted spatula, add the zucchini to the potatoes. 
- Add 1 tablespoon olive oil to pan and sauté spinach until wilted, using slotted spatula, add to potatoes and zucchini. 
- Add enough oil to the pan to total 2 tablespoons and return to medium heat.  Add the onion and sauté until soft and tender, about 10 minutes. 
- Remove with the slotted spatula and add to the potatoes. 
- Add the bell pepper strips to the vegetable mixture. 
- In a large bowl, beat the eggs until well blended, adding a little of the Parmesan, if using.  Add to the vegetables.  Pour the mixture into an oiled baking dish. 
-  Bake at 350°F until set and golden, about 25 minutes. 
- Cut into wedges and enjoy!