- 2 teaspoon extra-virgin olive oil
- 1/3 cup thinly sliced yukon gold potatoes
- 1/2 cup chopped onion
- salt, to taste
- 6 large eggs
- 1 cup chopped fresh spinach
- 2/3 cup cubed stale bread (preferably from a baguette or rustic loaf)
- 5 cherry tomatoes
- Preheat the oven to 400 degrees F.
- In an 8-inch cast-iron skillet, heat the olive oil over medium-high heat, tilting the pan to coat the bottom. Add the potatoes and cook, turning once, until lightly browned, 10 to 15 minutes total.
- Stir in the onion, sprinkle lightly with salt, and cook for another 3 to 4 minutes.
- Meanwhile, in a large bowl, whisk the eggs well. Stir in the spinach, bread, tomatoes, and a few pinches of salt.
- Pour the egg mixture into the skillet and cook for about 5 minutes, or until the eggs begin to set on the edges.
- Transfer the pan to the oven and bake for 15 to 18 minutes, until the frittata puffs up a little and is firm to the touch. Let cool for a few minutes before cutting it into wedges. Serve hot or at room temperature.